Get the best podcast recommendations in your inbox every week. 😎
podcast cover

KGNU - How On Earth

KGNU - How On Earth

How On Earth is a 25-minute news magazine about science, environment, technology, and more. The show is produced by volunteers at KGNU community radio in the Boulder-Denver area. We collect fascinating science headlines from around the world, produce...Show More
Best ∙
Newest ∙

24:15 | Jul 2nd

The PUNCH mission (starts at 8:05) NASA’s new mission to study the Sun is called PUNCH (Polarimeter to Unify the Corona and Heliosphere).  In this episode of How on Earth we talk with solar physicist Dr. Craig DeForest, the Principal Investigator of ...Show More

27:33 | Jun 25th

Despite all the advances in modern medical science, a diagnosis of Cancer often casts a pallor of hopelessness, for both the patient and the practitioner.  For many types the prognosis is often poor; the cure is often worse than the disease; victory ...Show More
Get the best podcast recommendations in your inbox every week. 😎

27:36 | Jun 18th

Yeast & Entropy  (starts 2:30) When yeast cells eat sugar and then give off ethanol, it helps us make yeast breads and beer.  But WHY would yeast work so hard to metabolize sugar, simply to spit out as ethanol?  This is a mystery that Matthias Heinem...Show More

27:31 | Jun 12th

Air Pollution, Possible Solutions (start time: 2:36) It is ubiquitous and essential to our life. It it is also the cause of some 7 million premature deaths around the world every year, ranking just behind diet, cancer and tobacco as a health risk. Th...Show More

28:01 | Jun 5th

This week on How on Earth, Beth interviews Nara Milanich, author of Paternity: The Elusive Quest for the Father, and professor of history at Barnard College. For most of human history, paternity was uncertain while motherhood most definitely was not....Show More

25:27 | May 28th

In the first feature (start time 1:00) KGNU’s Maeve Conran speaks with Antonia Malchik, author of A Walking Life.  This book  explores the relationship between walking and our humanity, how we have lost it through a century of car-centric design, how...Show More

29:07 | May 21st

With graduation season is upon us, today’s edition of How on Earth is our annual “Graduation Special”. Our guests in the studio today are scientists who have or will soon receive their Ph.D. in a STEM-related field.  They talk about their thesis rese...Show More

27:34 | May 14th

We speak with Larry Gold, founder of the Gold Lab Symposium that will take place at CU Boulder’s Muenzinger Auditorium this Friday and Saturday.  This year’s symposium will feature leading scientists discussing the double-edged swords of our modern t...Show More

26:27 | May 7th

Tackling Plastic Pollution (starts at 3:09):  It is, sadly, common for beachcombers around the world to see, along with clam shells and sand dollars, plastic bottles, bottle caps, cigaret filters and fish nets washed up on shore. According to estimat...Show More

26:20 | May 1st

In this week’s show, Beth interviews Joshua Goldstein. He and co-author Steffan Qvist wrote eloquently about how nuclear energy can replace fossil fuels – a vital necessity in a rapidly warming world. A new generation of nuclear plants reduces waste ...Show More

26:44 | Apr 16th

Concussion Test (Starts 1:00)  David Howell is chief researcher at Children’s Hospital Colorado.  Howell says the century old Romberg Balance Test can help evaluate how long a child will need therapeutic intervention after a blow to the brain.   Pot ...Show More

27:13 | Apr 9th

This special edition of How on Earth is produced in conjunction with the Conference on World Affairs.  Our guest a participants of the Conference: Dr. Michelle Thaller, assistant director of science at NASA’s Goddard Space Flight Center.  Her path ha...Show More

27:25 | Apr 2nd

A Consumer’s Guide to Pesticides in Produce (starts  7:55) You may be wondering if you washed the strawberries, blueberries or kale that you had for breakfast this morning enough to rid them of residue of potentially harmful pesticides. That is, if t...Show More

27:56 | Mar 27th

This View of Life (starts 6:56) In this episode of How on Earth, we talk with David Sloan Wilson, an evolutionary biologist with a special interest in human biocultural evolution. Dr. Wilson is Distinguished Professor of Biology and Anthropology at S...Show More

27:19 | Mar 21st

The Goodness Paradox (Starts 5:22): On this week’s show we play the full interview with Richard Wrangham, a primatologist at Harvard University, about his new book, The Goodness Paradox: The Strange Relationship Between Virtue and Violence in Human E...Show More

27:39 | Mar 13th

The Goodness Paradox (Teaser): Today’s spring pledge-drive show features brief clips from a recent interview with Richard Wrangham, a primatologist at Harvard University, about his new book, The Goodness Paradox: The Strange Relationship Between Virt...Show More

27:01 | Mar 6th

In this week’s show, Beth interviews Dr. Ivan Liachko, CEO and Co-Founder of Phase Genomics, a startup biotech company recently funded, in part, by the Bill and Melinda Gates Foundation. The company is using a new technology that allows researchers t...Show More

27:41 | Feb 28th

In this week’s show, Beth speaks with William Hollander, and Kevin Miller, of QalibreMD, a Boulder startup focused on transforming MRI technology. Traditional MRI scans can result in a large differences between readings on different equipment. The re...Show More

26:59 | Feb 12th

Spend some time at the intersection of art, engineering and science; we’ll hear about the world premier of HOLOSCENES / Little Boxes February 20, 7:00 PM at Fiske Planetarium in Boulder. Get a glimpse of how cutting edge visual artists team up with w...Show More

27:10 | Feb 5th

Athlete’s Guide to Recovery (starts at 5:39): Colorado is riddled with athletes, many of them incessantly chasing the latest recovery products and services that will enhance their performance — from Gatorade and other ubiquitous sports-recovery drink...Show More

26:21 | Jan 30th

Microbial communities are all around us: in our homes, gardens, oceans, even deep underground but their roles in the function of the biosphere are poorly understood. Today Beth spoke with Professor Noah Fierer, at the University of Colorado, in Bould...Show More

27:10 | Jan 22nd

Why Compost? (start time: 7:01) Many of us may feel a little less guilty letting fruits and vegetables go bad, because we figure that this waste, thanks to curbside compost pickup, will be turned into nutritious food for crops, lawns or grasslands do...Show More

26:25 | Jan 9th

Animal scientists have long considered domestic livestock to be too dumb to know how to eat right, but the lifetime research of animal behaviorist Fred Provenza and his colleagues has debunked this myth. Their work shows that when given a choice of n...Show More

27:26 | Dec 26th, 2018

OSIRIS-REx (starts at 1:00) In today’s first feature, we hear about OSIRIS-REx, NASA’s first mission to do a sample return from an asteroid.  Our guest is Dr. Vicky Hamilton, a Staff Scientist at the Southwest Reserarch Institute’s Boulder office, an...Show More

26:12 | Dec 18th, 2018

Soft Robotic Muscles (WHOLE SHOW)  Robotic Materials are going beyond gears and levers toward powerful components that are softer and more muscular.  These materials may someday soon help build more human like prosthetic limbs for amputees. . . . or ...Show More

27:06 | Dec 15th, 2018

Headlines: Inheritance of mitochondrial DNA.  Coffee and Parkinson’s disease. Sending your name and a message to the New Horizons spacecraft.  Winds on Mars.  Water on Asteroids. Feature: Titan (starts at 8:55) The solar system has so many different ...Show More

27:33 | Dec 5th, 2018

Climate Change (starts at 6:30)  Volume II of the fourth National Assessment on Climate Change was released on the day after Thanksgiving. The findings are stark. It is already too late to prevent major long term effects of climate change.  The scien...Show More

25:15 | Nov 28th, 2018

Never Home Alone (starts at 4:26) In this week’s How on Earth, Beth interviews Professor Rob Dunn. In his recent book, Never Home Alone, he gives a sneak peak into the natural history of the wilderness in our homes, from the microbes in our showers t...Show More

27:45 | Nov 27th, 2018

Baking Soda for Autoimmune Disease (starts at 1:00)  Georgia Medical College researcher Paul O’Connor reports that a small amount of baking soda in water, for two weeks, shifts the immune cell known as macrophage away from “attack” mode and more towa...Show More

28:20 | Nov 13th, 2018

Nature Rx (start time: 9:33): Nature is good for your health. Sounds obvious, but what does science tell us? A walk in the woods can help to calm your nervous system and spark novel ideas, and spending time in nature can reduce symptoms of PTSD or AD...Show More

24:28 | Oct 30th, 2018

It has been 50 years since the original 2001, A Space Odyssey, where movie viewers first heard Captain Powers asking, “Open the pod bay doors, HAL” and found HAL thought differently about whether that was a good idea.  For most of that half-century, ...Show More

28:00 | Oct 23rd, 2018

Today’s show offers two features: Oil & Gas Impacts (start time: 1:05) Proposition 112, which would require oil and gas wells to be at least 2,500 feet from homes, schools, parks and other buildings, has highlighted mounting public concerns about the...Show More

27:10 | Oct 17th, 2018

This week on How on Earth Beth interviews author Will Cole, functional medicine physician, about his new book, Ketotarian. He proposes a novel ketogenic diet, which has typically derived its high fat content from meat and dairy. The book describes th...Show More

26:12 | Oct 9th, 2018

Regenerative Medicine (start time: 7:30): We begin our series on regenerative medicine with a discussion of scientific advancements, promises, caveats, regulations, and challenges of regenerative medicine therapies for orthopedic applications, such a...Show More

26:23 | Oct 4th, 2018

Beth talks with author Ben Goldfarb about his new book, amusingly titled Eager: The Surprising, Secret Life of Beavers and Why They Matter. You’ll gain a better understanding of beavers’ myriad skills, and want to restore beaver populations in our lo...Show More

26:04 | Sep 18th, 2018

Boulder researchers have discovered a key mechanism by which skin begins to develop in embryos, shedding light on the genetic roots of birth defects like cleft palate and paving the way for development of more functional skin grafts for burn victims....Show More

27:34 | Sep 11th, 2018

This week’s How On Earth features the following two segments: Late-summer Cricket Chorus (start time: 1:02) One of the most poetic sounds of the end of summer is 
. no, not your kids kicking and screaming because summer is over. It’s the sound of cri...Show More

26:33 | Sep 5th, 2018

The National Wildlife Federation just released its report, Safeguarding Summer: From Climate Threats to Iconic Summer Experiences. This report chronicles the latest scientific findings on these trends and shows how we can engage on these issues to sa...Show More

27:48 | Aug 28th, 2018

This week’s How On Earth offers two features: Work-Email Anxiety (start time: 7:58) If you’re wondering why you often feel anxious on Monday mornings, despite having spent time with your family and friends over the weekend, you might recall the amoun...Show More

28:19 | Aug 22nd, 2018

Low Carb Diets and Lifespan (starts 3:00) Dr. Ron Rosedale, MD, gives a “second opinion” about a widely publicized report in the prominent medical journal The Lancet.  The Lancet report contends that low carb diets (40% carbs or less) shorten lifespa...Show More

27:10 | Aug 15th, 2018

Aerogel as Clear As Glass:  (Starts 4:00)   Most aerogels “windows” are kind of foggy looking.  A CU-Boulder science team has created something better.  It’s a liquid made from recycled plant material, a liquid that hardens into a  gel that’s almost ...Show More

28:35 | Aug 7th, 2018

Dogs have an incredible sense of smell – it’s so good, people can train dogs to sniff our everything from illegal drugs and explosives to lost people and even computer “thumbnail” drives, that maybe someone is trying to sneak into a high security bui...Show More

26:35 | Aug 1st, 2018

This week on How on Earth, Beth finishes up her interview with Professor Doug Seals, aging researcher. He explains the role of vascular damage in heart disease and how lifestyle choices such as exercise and diet can maintain healthy vasculature. In a...Show More

27:10 | Jul 25th, 2018

This week’s How on Earth guest, Dr Doug Seals, researches vascular aging. Several events occur as we age that conspire to damage blood vessels, culminating in what is popularly known as hardening of the arteries. But lifestyle modifications to exerci...Show More

26:21 | Jul 17th, 2018

We offer two feature interviews on this week’s show: Health Impacts of Wildfire Smoke (start time: 4:22) It’s peak wildfire season. Smoke from forest and grass fires contains particulates that can irritate eyes, throat and lungs — especially in child...Show More

29:25 | Jul 11th, 2018

We present another part of our interview with Michael Pollan about his book “How to Change Your Mind:  What the New Science of Psychedelics Teaches Us About Consciousness, Dying, Addiction, Depression and Transcendence”.  It is an investigation into ...Show More

27:05 | Jul 3rd, 2018

This week on How on Earth, Beth talks to author Dr Marc Bekoff, Professor Emeritus, CU Boulder. His new book has the wonderful title of Canine Confidential. If you enjoy dogs, dog parks, and watching them interact with each other and people, you’ll e...Show More

27:28 | Jun 30th, 2018

Junk Raft (starts 6:20) Marcus Eriksen discusses what can and cannot be done about the “plastic smog” of microscopic debris permeating the world’s ocean, from the state-sized floating islands of plastic in the Pacific, to the microscopic debris that ...Show More

25:02 | Jun 20th, 2018

This week on How on Earth, Beth interviews Dr Lee Know, author of Mitochondria and theFuture of Medicine. These amazing organelles, which allow complex life on Earth to exist, do more than “just” make ATP. Ask that isn’t enough! They are intimately i...Show More

26:06 | Jun 14th, 2018

Two epidemics sweeping the developed world are Type 2 diabetes and Alzheimer’s disease.This week on How on Earth, Beth interviews Dr Steven Masley about his book, The Better Brain Solution in which he explores the connection between diet (and other l...Show More

27:55 | Jun 5th, 2018

This week’s show brings you the following feature interview: Protecting Ocean Biodiversity (start time: 2:42) In honor of World Environment Day (today), World Oceans Day (Friday) the March for the Ocean (Saturday), and Capitol Hill Ocean Week (all we...Show More

27:28 | Jun 1st, 2018

Michael Pollan: How to Change Your Mind: What the New Science of Psychedelics Teaches Us About Consciousness, Dying, Addiction, Depression and Transcendence.  We speak with New York Times Bestselling science writer Michael Pollan about his new book t...Show More

28:38 | May 24th, 2018

In 2015, the New Horizons Spacecraft flew past Pluto. Because Pluto is so far away, it took nearly 10 years of travel for the spacecraft to reach that distant dwarf planet — and that was after a decade of work to get the spacecraft to the launch pad....Show More

27:07 | May 15th, 2018

Chasing New Horizons  (starts 1:00) brings the reader Inside the Epic First Mission to Pluto to  hear the details and meet the personalities behind building, launching, and flying this audacious mission.  How on Earth’s Joel Parker (also an astrophys...Show More

42:02 | May 15th, 2018

Here we provide the full interview by How on Earth’s Joel Parker of planetary scientists Dr. Alan Stern (Southwest Research Institute) and Dr. David Grinspoon (Planetary Science Institute), about their new book: “Chasing New Horizons: Inside the Epic...Show More

27:46 | May 9th, 2018

With graduation season is upon us, today’s edition of How on Earth is the second of a two-part annual “Graduation Special”. Our guests in the studio today are scientists who will receive their Ph.D. in a STEM-related field.  They talk about their the...Show More

28:14 | May 2nd, 2018

With graduation season is upon us, today’s edition of How on Earth is the first of a two-part annual “Graduation Special”. Our guests in the studio today are scientists who will receive their Ph.D. in a STEM-related field.  They talk about their thes...Show More

26:25 | Apr 30th, 2018

Attention all Nature Lovers and Amateur Naturalists, Friday April 27th kicks of the City Nature Challenge, where Boulder will compete with 65 cities throughout the world to identify the most species within their area over a 4 day period. It’s a compe...Show More

28:10 | Apr 17th, 2018

Today’s show offers two feature interviews: New Theory of How Cancer Evolves Inside Us (start time: 0:58): It is commonly known that cancer afflicts old people more than youth. Conventional wisdom has held we get cancer with age largely because we ac...Show More

26:50 | Apr 10th, 2018

As part of the Conference of World Affairs, which is being held this week at the campus of the University of Colorado, Boulder, we are speaking today with astrophysicist Adam Frank. Frank is a professor at the University of Rochester, where he studie...Show More

29:24 | Apr 3rd, 2018

Hacking the Planet (start time: 10:24): It’s tough to wrap one’s mind around just how monumental and consequential the problem of climate change is. So dire that scientist and engineers for years have been exploring ways to “hack” the planet–to manip...Show More

26:59 | Apr 2nd, 2018

Shelley Schlender talks with renowned skeptic Michael Shermer about his new book, The Moral Arc:  How Science and Reason lead humanity toward truth, justice and freedom.  This is an extended version of the interview.  (27 minutes)

12:52 | Mar 28th, 2018

This is an exended interview with a survivor of treatment resistant post traumatic stress disorder, also known as PTSD.  Karen says she is cured of her PTSD now, thanks to a treatment that includes lots of psychotherapy, plus three times when she too...Show More

23:02 | Mar 28th, 2018

This is an extended interview with Marcella Ot’alora.  Ot’alora is a Boulder psychotherapist, and the principal investigator for the Boulder branch of the FDA approved, nationwide studies of using MDMA in the treatment of post-traumatic stress disord...Show More

26:33 | Mar 28th, 2018

In the years ahead, doctors across the U.S. might be prescribing a currently illegal drug as therapy for the hard-to-treat condition known as Post-Traumatic Stress Disorder (PTSD).  The new “medicine” would be MDMA, an ingredient in the party drug ec...Show More

28:04 | Mar 20th, 2018

You may be among many who wistfully harken back to the “golden days” of the past. For some people the past does look rosier, or perhaps the present looks grim, but, according to Steven Pinker, a Harvard University cognitive psychologist, that “golden...Show More

28:50 | Mar 13th, 2018

Today’s pledge-drive show features parts of our recent interview with Steven Pinker. Enlightenment Now: If you think the world, including the U.S., is falling apart, that the ideal of progress is as quaint as riding to work on a horse and carriage, y...Show More

27:21 | Mar 7th, 2018

It’s the endless stream of tailpipes on the L.A. freeway which  causes that unsightly smog, nagging cough and chronic respitory problems, right?  Perhaps not any more, a new scientific study helps build the case that the major culprit may now be purc...Show More

27:55 | Feb 27th, 2018

Woodstock.  Lallapalooza. Lilith Fair.  Coachella.  Burning Man.  All famous music and art festivals.  What about
science festivals?  Perhaps a festival with all the “rock stars” of science and space exploration, and while you’re at it, throw in a fe...Show More

26:29 | Feb 25th, 2018

Spaceport Earth. This week on How on Earth, we speak with Joe Pappalardo about his book “Spaceport Earth”. With the successes of Space-X and Blue Origin, private and commercial spaceflight is a fast growing business. Pappalardo talks with us about th...Show More

27:33 | Feb 13th, 2018

In today’s show we offer two related features: Plastic Pollution in the Arctic, Green Chemistry  (start time: 7:48) Try to wrap your brain around this statistic: by mid-century the mass of plastic in the oceans will weigh more than the total mass of ...Show More

27:13 | Feb 3rd, 2018

This week on How on Earth, Beth interviews Dr Valter Longo, director of the USC Longevity Institute. Dr Longo has researched the fundamental mechanisms of aging in yeast, mice and humans using genetics and biochemistry techniques. He is also interest...Show More

27:50 | Jan 23rd, 2018

Boulder, Colorado has a rich culture of science, as the home for serveral prestigious national laboratories, a thriving technology industry, the flagship campus of the University of Colorado and various joint ventures between them.  As a science enth...Show More

26:40 | Jan 16th, 2018

Roger the Fragrance Free Barber (Starts 3:25)   Artificial fragrances in shampoos, colognes, lotions. deodorant, laundry detergent and more nearly led Roger the Barber, to give up his profession, due to his chemical sensitivities.  Then he opened his...Show More

27:52 | Jan 12th, 2018

This week on How on Earth, Beth interviews Pete Brown, author of Miracle Brew, the story of how beer is made of 4 seemingly simple components, but really from an amazing complexity of science and art. The New York Times recently reviewed Miracle Brew...Show More

25:19 | Jan 6th, 2018

For this end-of-the-year/start-of-the-year  How on Earth show, we look back to 2017 with clips from some of our features from the past year: selections about tracking methane leaks, ketogenic diets, using MDMA to treat PTSD, gravitational waves, the ...Show More

30:30 | Dec 20th, 2017

This week on How on Earth, Beth finishes the interview with Miriam Kalamian, author of Keto for Cancer. This encyclopedic volume lays out the groundwork for using a ketogenic diet to treat cancer. But, as the author points out, the diet, which starve...Show More

26:06 | Dec 13th, 2017

Healthy . . . But Missing Gut Microbes (Starts 3:25) Practically everyone on the planet now knows that animals have microbes in their guts. This is a new field of exploration, and top researchers emphasize that we need to learn much more before makin...Show More

25:43 | Dec 6th, 2017

This week on How on Earth, we started speaking with Miriam Kalamian, author of the newly released Keto for Cancer. The interview starts at 11â€Č 30″, but unfortunately we lost the connection after only 5 minutes. You can link to her book at http://www....Show More

26:42 | Nov 21st, 2017

The Unnatural World (start time: 6:58): It’s an audacious topic for a book: the planet, and audacious individuals who are working to save — actually, to remake — human civilization and our home on Earth. David Biello is the science curator at TED and...Show More

27:14 | Nov 15th, 2017

Lancet Countdown on Climate Change (starts 3:45) Respectable science journals no longer debate whether human activity causes climate change, or even if it can be reversed to prevent human suffering.  They now scramble to figure out what will be the c...Show More

26:41 | Nov 8th, 2017

This week on How on Earth, Beth interviews Sy Montgomery and Liz Thomas, co-authors of Tamed and Untamed: Close Encounters of the Animal Kind: Some amazing stories of their experiences with animals throughout the animal kingdom, ranging from domestic...Show More

26:09 | Oct 24th, 2017

Mutant Proteins and Protein Evolution (starts 4:42) CU School of Medicine professor David Pollock explains why he has devised a new way to identify and predict both the evolution of proteins and disease causing protein mutations.    Pollock’s highly ...Show More

28:04 | Oct 12th, 2017

In 1963, the United States, the Soviet Union, and Great Britain signed the Limited Test Ban Treaty, agreeing to not test nuclear weapons in the atmosphere, underwater, or in outer space.  France continued atmospheric testing until 1974, and the last ...Show More

25:24 | Oct 5th, 2017

This week on How on Earth, Beth interviews Dr Martin Blaser of New York University who challenges the assumption that antibiotics are harmless drugs targeting only harmful pathogens. In his recent book, Missing Microbes, Blaser presents the evidence ...Show More

27:12 | Sep 27th, 2017

Much of current climate science research focuses on understanding how the climate is changing and what type of climate we will have in the near future. But to understand where the climate is going, we need to understand where the climate has been. It...Show More

28:35 | Sep 19th, 2017

The Cassini mission to Saturn launched 20 years ago, on October 15, 1997.  It took seven years to reach Saturn, and has been orbiting and intensely studying Saturn ever since
until last week when the mission ended in a final dive into Saturn’s atmosp...Show More

26:46 | Sep 13th, 2017

This week on How on Earth we speak with Simon Melov, a biochemist at the Buck Institute for Aging. Dr Melov studies various aspects of aging in worms, mice and humans. The aging field is replete with new and exciting discoveries and Simon’s work epit...Show More

26:03 | Sep 5th, 2017

Biofuels Tradeoffs (start time: 8:27): In this week’s show David DeGennaro, an agriculture policy specialist with the National Wildlife Federation and author of a report called “Fueling Destruction,”  talks with host Susan Moran about the environment...Show More

26:41 | Aug 30th, 2017

Climate Change and Extinctions Following an Asteroid Impact (starts at 8:45) It has been hypothesized that the dinosaurs were killed off by a large asteroid that struck the Earth. The details of how the impact of a 10 kilometer diameter asteroid led ...Show More

25:46 | Aug 26th, 2017

Sustainable Transportation is a major issue for the front range.  In that field a hot topic is PRT, which stands for Personal Rapid Transit system, a radical vision for creating a sustainable infrastructure to get us from point A to point B.  How on ...Show More

28:10 | Aug 16th, 2017

This week on How on Earth, Beth spoke with Dr Gordon Lithgow, a researcher at the Buck Institute for Aging in California who studies aging in nematode worms. Stress actually keeps us young by activating systems that repair and maintain cells. These s...Show More

26:49 | Aug 14th, 2017

This week on How on Earth we look at the scientific research into the lifespans of Americans. Mortality trends in America (start time 4:05): We speak with Andrea Tilstra, who co-authored a recent paper on mortality trends in America. Tilstra is a co-...Show More

27:53 | Aug 1st, 2017

Chasing Shadows [starts at 9:40]  Astronomy is a science that depends on watching things happen in the universe that we don’t have control over: supernovae, formation of stars, orbits of planets, and the spectacle of solar eclipses.  You can’t grab a...Show More

27:39 | Jul 25th, 2017

Space Shield for Satellites (starts 1:00)   An invisible radio wave pollution makes a “space shield” that protects orbiting satellites from Van Allen Belt radiation.  Dan Baker, head of CU-Boulder’s Laboratory for Atmospheric and Space Physics (LASP)...Show More

27:30 | Jul 18th, 2017

Today’s show offers the following feature: Extraterrestrial intelligence? (start time: 6:30): It’s mid-summer, a time when many of us like to spend leisurely time outside at night, gazing at the stars and planets, and asking the big existential quest...Show More

27:05 | Jul 14th, 2017

On the first day of the summer pledge drive, Beth interviews Dr Brittany Demmitt, a behavioral molecular geneticist. Her recent study used a powerful genetic tool, identical twins, to show that the micro biome in the mouth is influenced by both genes...Show More

27:38 | Jun 27th, 2017

This August 21st, some parts of the Earth will be plunged into darkness in the middle of the day.  It will be a solar eclipse; the moon’s shadow will cross the United States from Oregon to South Carolina, with the path closest to Colorado passing thr...Show More

27:40 | Jun 21st, 2017

We offer two feature interviews on today’s show. Chronic Fatigue Syndrome (start time: 11:49)  Imagine spending years waking up so sore and fatigued many mornings that you can barely move. And traversing the country to find doctors who could offer a ...Show More

23:48 | Jun 13th, 2017

We offer two features on today’s show: Protecting Pollinators (start time: 0:58): Hills, prairies and gardens are neon green and in full bloom. A pollinator’s paradise, at least it should be. Birds, bees, butterflies, beetles and other pollinators re...Show More

27:22 | Jun 6th, 2017

With graduation season is upon us, or in many cases in the rearview mirror, today’s edition of How on Earth is the second of a two-part “Graduation Special”. Our guests in the studio today are scientists who recently graduated with – or soon will rec...Show More

27:41 | May 30th, 2017

With graduation season is upon us, or in many cases in the rearview mirror, today’s edition of How on Earth is the first of a two-part “Graduation Special”. Our guests in the studio today are scientists who recently graduated with – or soon will rece...Show More

26:23 | May 24th, 2017

In their upcoming book, A Metabolic Approach to Cancer, authors Dr Nasha Winters and Jess Kelley, describe new developments in individualized therapies for cancer, based on nutrition and personalized genetic analysis. Almost 100 years ago it was foun...Show More

27:36 | May 16th, 2017

Gold Lab Symposium (starts 1:00) Scientist and Entrepreneur Larry Gold shares what to expect in science and health at the annual Gold Lab Symposium, taking place this weekend at CU Boulder.  This year’s theme is “From Lab to Living Room.”  Go to the ...Show More

27:58 | May 10th, 2017

This week on How on Earth Beth interviews Travis Christofferson, author of Tripping over the Truth, in which he explores the history, and the human story that has led to the resurgence of Otto Warburg’s original metabolic theory first proposed in 192...Show More

25:32 | Apr 18th, 2017

500 Women Scientists (starts 3:01) Ecologist Jane Zelikova explains how an acquaintance while at CU-Boulder led to an open letter she co-authored with Kelly Ramirez about science . . . and this ultimately launched an advocacy group.  Over 19,000 wome...Show More

26:53 | Apr 12th, 2017

Today’s How on Earth show is a special edition in conjunction with the Conference on World Affairs panel entitled: “New Adventures in Astronomy”. Our guest is Gerrit Verschuur, a radio astronomer who has worked at Jodrell Bank radio observatory in th...Show More

25:18 | Apr 4th, 2017

The Long Now Foundation in Colorado (start time 5:02): People often measure “success” as fifteen minutes of fame, or a blockbuster financial quarter. This focus on short term results doesn’t always build the skills needed to solve long-term problems,...Show More

27:06 | Mar 28th, 2017

Drilling’s Health Impacts (start time: 7:50): A pressing question on the minds of many Colorado residents, health experts, and others amidst a surge of oil and gas activity is this: Does living near an oil and gas well harm your health? A scientist a...Show More

26:50 | Mar 28th, 2017

Your Baby’s Microbiome (start time 6:13): This week on How on Earth Beth Bennett interviews Toni Harmon, author of Your Baby’s Microbiome, a look into the role the maternal micro biome plays before and after birth. For a newborn, the biological defen...Show More

28:18 | Mar 16th, 2017

The Nature Fix.  (starts 1:50)  In this spring pledge drive show, we revisit the science show interview about the benefits of getting out in nature. The Case Against Sugar. (starts 9:40) Best-selling science writer Gary Taubes discusses his new book,...Show More

26:50 | Mar 3rd, 2017

Eclipse 2017 (start time 5:56): This summer America will experience its first total solar eclipse in almost 30 years. How on Earth’s Alejandro Soto speaks with Dr. Claire Raftery from the National Solar Observatory (NSO) about the upcoming eclipse. D...Show More

27:22 | Feb 22nd, 2017

Today’s feature has How on Earth’s Beth Bennett talking with Dr. Mike Shanahan, a biologist who has a degree in rainforest ecology.  He has lived in a national park in Borneo, bred endangered penguins, and investigated illegal bear farms.  His writin...Show More

28:30 | Feb 14th, 2017

Your Brain on Nature (start time: 5:49): You may think it’s a no-brainer: that nature is good for your mental and physical health. After all, a walk in the woods or even an urban park brightens your outlook on life, at least for a little while. Turns...Show More

24:27 | Feb 7th, 2017

Citizen Science (start time: 5:32): For those who would love to track birds and other creatures or to test drinking water quality in their community, for instance, but think it would require a degree in science to contribute to important scientific d...Show More

27:08 | Feb 1st, 2017

This week on How on Earth host Susan Moran interviews two investigators of FDA-approved clinical trials testing the efficacy and safety of the illegal drug MDMA — known in an altered form as Ecstasy or Molly — as a treatment (along with psychotherapy...Show More

29:01 | Jan 24th, 2017

When Sylvia Tara had more trouble fitting into her skinny jeans than her friends, she decided to learn why she was prone to being fat.  Her new book is –  The Secret Life of Fat: The Science Behind the Body’s Least Understood Organ and What It Means ...Show More

25:44 | Jan 18th, 2017

The American Gut project is the largest crowd-sourced project ever: to date, over 80.000 participants have contributed fecal, skin, or oral samples. The ambitious goal is to characterize the microbiota of as many individuals as possible to identify t...Show More

27:10 | Jan 11th, 2017

Sometimes when we are having personal or health problems, it helps to get an outside perspective: talk to other friends who have experienced similar problems and how they dealt with them, and other friends about how they avoided those problems.  Talk...Show More

37:09 | Jan 11th, 2017

This is the full interview with Dr. David Grinspoon, author of the book “Earth in Human Hands: Shaping Our Planet’s Future”.  Excerpts of this interview by Joel Parker aired on How on Earth on our January 10, 2017 show. Listen here:

28:14 | Jan 5th, 2017

Beth interviews Drs Jane Bock (starts at 16:35) and David Norris (starts at 7:10), co-authors of Forensic Plant Science, the application of plant science to the resolution of legal questions. A plant’s anatomy and its ecological requirements are in s...Show More

26:42 | Dec 27th, 2016

For this end-of-the-year How on Earth show, we look back to 2016 with clips from some of our features from the past year: selections from the Our Microbes, Ourselves series, research about Zika, gravitational waves, and carbon farming.  Those are jus...Show More

27:27 | Dec 21st, 2016

This week on How on Earth Beth interviews two NOAA scientists who study climate change. Joanie Kleypas is a marine ecologist who investigates how rising atmospheric carbon dioxide affects marine ecosystems. She is a self-described optimist who is com...Show More

26:43 | Dec 16th, 2016

This week’s show offers two features: Global Biodiversity (start time: 1:22): Scientists, NGOs and government representatives from nearly 200 countries have been gathering in Cancun, Mexico, for the UN Biodiversity Conference, known as COP13. They’re...Show More

25:00 | Dec 8th, 2016

This week, Alejandro speaks with Leonard David, a space journalist who has written a new book Mars – Our Future on the Red Planet. In his book he discusses the plans of both NASA and private companies to send humans to the red planet. The book is a c...Show More

27:22 | Nov 29th, 2016

Beyond Earth (start time 5:10) Many have dreamt of colonizing other planets. It’s been a staple of science fiction for decades. Most often, people imagine creating a colony of humans on Mars, where people would live on a cold, dry planet with a thin,...Show More

27:34 | Nov 22nd, 2016

Regenerative Economics (starts 3:20) Natural Capitalism Solutions leader, Hunter Lovins, will share an economic argument for why now’s the time for cleaner energy.  Lovins, who lives near Niwot, Colorado, has presented this speech to government leade...Show More

27:38 | Nov 15th, 2016

Max Boykoff – Global Climate Talks – Moving Ahead With or Without US –  (entire show) While the world has held climate talks for 22 years (This is COP – Conference of the Parties — 22) and the Kyoto Protocol talks about climate change have been held ...Show More

27:43 | Nov 8th, 2016

The Science of Suggestibility (start time: 5:00) Scientists are learning more and more about how our expectations and beliefs influence how our bodies, including our neurochemistry, respond to pain and disease. The researchers are discovering that we...Show More

24:39 | Oct 25th, 2016

Multitudes of Microbes (start time: 3:38): You may find it unsettling to learn that our human cells make up only half of our bodies. The other half is a bunch of microbes (in the neighborhood of 40 trillion), all living and reproducing in, and on, ou...Show More

27:02 | Oct 19th, 2016

This week’s pledge- drive show features a teaser introduction to Ed Yong’s new book I Contain Multitudes: The Microbes Within Us and a Grander View of Life. We play segments from the interview that host Susan Moran recently had with Yong, a science w...Show More

28:27 | Oct 6th, 2016

Denver Permaculture Guild (starts 3:30) staff and board members explain the goal of permaculture and guild’s annual workshops program taking place this weekend.       Ron Rosedale, MD, Explains Autophagy (starts 17:50)   The Nobel Peace Prize in Medi...Show More

27:34 | Sep 27th, 2016

Rosetta [feature starts at 5:27] The Rosetta Space Mission has been in flight for ever 12 years and will be ending with a dramatic crash this Friday morning around 10:40 UT (4:40 am Mountain time) – it’s an event that will be watched and talked about...Show More

36:03 | Sep 20th, 2016

This is an extended interview with Dale Bredesen, leader of the Buck Institute for Research on Aging.  Bredesen has documented reversal of early Alzheimer’s in a small case study, largely through lifestyle interventions.  We spoke while he was at CU-...Show More

27:48 | Sep 20th, 2016

Alzheimer’s Reversal (starts 2:20) The Alzheimer’s Association calls Alzheimer’s “the only disease among the top 10 causes of death in America that cannot be prevented, cured or even slowed.”  This gloomy outlook means many people avoid screening tes...Show More

25:01 | Sep 15th, 2016

This week, an interview with Howard Jacob, PhD, principal investigator and executive vice president for genomic medicine at HudsonAlpha Institute for Biotechnology (starts at 5’30”)describing the potential for personalized genomic sequencing and anal...Show More

28:08 | Aug 30th, 2016

What are the qualities that make a good scientist? What are the qualities that make a good science fiction writer? Those skills do not necessarily overlap, but when they do, they not only can produce wonderful works of speculative fiction based on ha...Show More

27:28 | Aug 23rd, 2016

Methane Madness (start time: 2:20)  More than a decade ago, scientists noted that the area where Colorado, New Mexico, Arizona and Utah meet, known as Four Corners, appeared to be emitting a curiously large amount of methane. In a new study, a team o...Show More

27:23 | Aug 16th, 2016

Tackling Lead Contamination: Flint and Beyond (start time: 6:27) When you pour yourself a glass of water from the tap, do wonder whether it’s truly clean and safe? How would you know for sure? Flint, Mich., is a haunting example of how a breakdown in...Show More

26:47 | Aug 10th, 2016

In headlines and 2 interviews with Zika researchers,Beth covers new material on this disturbing disease. CDC Chief of Virology, Dr Ann Power (start time 3’45”) and Dr Rushika Ferrara of CSU (start time 10’45”), describe aspects of the viral life cycl...Show More

27:28 | Aug 2nd, 2016

The Keeling Curve (starts 5:00) Friday, August 12th the Boulder Shambala Center hosts:  Living Beyond Hope And Fear:  Social Confidence And Climate Change.  One leader of the event is the daughter of scientist who created the Keeling Curve for tracki...Show More

27:18 | Jul 27th, 2016

In Colorado, a boom in methane development over the past few years has raised questions about whether the environmental impacts are outpacing scientists’ ability to measure them. Shelley Schlender and Daniel Glick discuss the current state of the sci...Show More

27:40 | Jul 20th, 2016

This week on How on Earth we speak with 2 notables. NY Times columnist Carl Zimmer describes his exploration of his genome sequence, yes all 3 billion bases! See the series he has produced detailing this journey at More

26:26 | Jul 13th, 2016

Sustainable Agriculture (starts 3:06): We couldn’t feed the planet without nitrogen, a vital nutrient for crops. But most soils don’t produce enough of it to feed anywhere near our 7 billion-plus humans on the planet. So, for nearly a century we’ve b...Show More

26:17 | Jul 5th, 2016

Quantum Dot Antibiotics (starts 1:00) This programmable antibiotic might keep pace with quickly evolving superbugs.  Unlike most drugs – it’s not derived from biological sources.  It’s a tiny version of the semiconductors in everything from TVs to ip...Show More

26:32 | Jun 28th, 2016

Pollinators Matter (starts at 4:43): Now that backyard gardens are in full bloom it’s a good time to think about pollinators. Honeybees, butterflies, beetles and other pollinators depend on many flowering plants for nectar. And we depend on these pol...Show More

28:23 | Jun 21st, 2016

David Sumpter’s new book is Soccermatics–Mathematical Adventures in the Beautiful Game.  It’s about how the mathematical patterns of how to win at soccer — and much much more — like how a math algorithm of how a slime mold seeks out food can help eng...Show More

27:24 | Jun 14th, 2016

The Carbon Farming Solution – (Starts 2:13) Carbon Sequestration is the act of removing carbon from the air and putting it . . . somewhere else.  Kendra Krueger talks with author Eric Tunesmeier about his book, The Carbon Farming Solution, with surpr...Show More

28:01 | Jun 8th, 2016

Beth interviews Dr Sarah Spaulding, of the Institute for Arctic and Alpine Research here in Boulder. Sarah studies microscopic single celled algae, creatures that photosynthesize but aren’t plants. She discusses their ecological roles in numerous eco...Show More

25:07 | Jun 1st, 2016

Cell Phones & Cancer  (Starts 1:00) A $25 million study reports cell phone radiation boosted brain cancer in rats . . . and rats exposed to radiation lived longer.  Frank Barnes, CU-Boulder Distinguished Professor of Electrical and Computer Engineeri...Show More

28:20 | May 24th, 2016

Microbes and Stress Resilience (starts 5:13) If you’re worried that some dirt still clings to your skin under your fingernails after planting or weeding in the garden, fear not. In fact, the more you feel and even breathe its fumes, the better, resea...Show More

27:16 | May 17th, 2016

((Starts 00:00)) Today we speak with Larry Gold, founder of the GoldLab Symposium that brings scientists and thinkers from around the world to share their perspectives about health and healthcare.  The theme of this year’s symposium is: Standing Toge...Show More

27:47 | May 5th, 2016

In this follow-up episode of our “Graduation Special” we talk with three more guests graduating with science Ph.D.’s from the University of Colorado in Boulder.  They join us to talk about their thesis research, their grad school experiences, and wha...Show More

27:28 | May 5th, 2016

The graduation season is upon us and our guests in today’s show will be graduating with science Ph.D.’s from the University of Colorado in Boulder.  They join us to talk about their thesis research, their grad school experiences, and what they have p...Show More

28:33 | May 4th, 2016

(Starting at 6:30) FLOWS bridges social justice and environmental issues. FLOWS provides leadership training opportunities, green job skills, and free energy and water upgrades while building partnerships between CU students and staff and community m...Show More

27:02 | Apr 19th, 2016

((Starts 00:00)) We speak via Skype with Renowned English Ornithologist Tim Birkhead, about “The Most Perfect Thing.”  That’s the title of his new book.  It’s all about taking a scientific look inside, and outside, a bird’s egg. Host:  Shelley Schlen...Show More

25:14 | Apr 13th, 2016

Host Beth Bennett interviews Bob Crifasi, author of A Land Made of Water (starts at 4’55”). Bob works in water management and planning and is an environmental scientist with over 25yr experience. He was the Water Resources Administrator for the city ...Show More

25:30 | Apr 5th, 2016

This special edition of How on Earth is produced in conjunction with the Conference on World Affairs.  Our guests are two of the participants of the Conference: astrobiologist Dr. David Grinspoon and physicist Dr. Sidney Perkowitz.  In keeping with t...Show More

24:35 | Mar 30th, 2016

Prairie Fire (start time: 0:57) Journalist and Megafire expert Michael Kodas discusses the raging Kansas prairie fire and how it compares to wildfires in Colorado. Pacific Temperatures Predict New York Heat Waves (start time: 6:58) Climatologist Kare...Show More

24:45 | Mar 15th, 2016

Mind+Body Science (start time: 4:52): If you’ve ever struggled  to decide whether to see a Western conventional doctor or an  “alternative” medical practitioner for ailments ranging from a compromised immune system to irritable bowel syndrome, you ar...Show More

27:12 | Mar 8th, 2016

In today’s spring pledge-drive show we play clips from an interview with  Jo Marchant, author of the new book Cure: A Journey into the Science of Mind Over Body. (Stay tuned for the extended interview on next Tuesday’s show.) And we highlight another...Show More

24:03 | Feb 24th, 2016

Today’s show offers two features: High School STEM Stars (start time: 5:00): Developing polymers to reduce waste from biodiesel production. Using 3D printing to design ocean textures, such as fish gills and waves, that blind students can use in textb...Show More

25:10 | Feb 17th, 2016

Interview with LIGO Scientist Dr. Matt Evans (6:22): The recent big news in physics was the announcement of the first direct detection of gravitational waves.  The detection was made by the LIGO project, which stands for “Laser Interferometer Gravita...Show More

25:38 | Feb 12th, 2016

The Glucocorticoid Receptor (starts at 5:30): We interview Dr. Miles Pufall who studies the glucocorticoid receptor, a protein in cell membranes that is the target of drugs used to treat a variety of conditions from asthma to cancer. Binding cortisol...Show More

24:17 | Feb 2nd, 2016

Winter Stars (starts at 5:30).  We talk with Dave Sutherland, an interpretive naturalist with Boulder Open Space and Mountain Parks, about winter star-gazing.  This program is tied to an upcoming concert performance by the Boulder Philharmonic Orches...Show More

24:23 | Jan 26th, 2016

Electric Car Road Trips (starts 3:42): We go on a road trip with How on Earth’s Shelley Schlender to see how all-electric vehicles are exceeding “range anxiety” by driving coast to coast, all on electricity.  Along the way we talk with Boulder Nissan...Show More

25:10 | Jan 20th, 2016

Using the Microbiome to Determine Time of Death (starts at 5:40): This week on How on Earth, we speak with Jessica Metcalf, an evolutionary biologist, who studies bacteria, specifically the microbiome. One of her research interests is using molecular...Show More

13:29 | Jan 18th, 2016

Today’s show of How on Earth starts with headlines about dark matter, genetic mysteries, jealous monkeys, and polar bears.  We then present a short feature of BBC’s Science in Action about the Hubble Space Telescope. This is shorter than our usual Ho...Show More

1:21:27 | Jan 5th, 2016

Hunter Lovins – Regenerative Economics EXTENDED VERSION.  This is the extended version of the fall 2015 talk by Hunter Lovins, recorded by Shelley Schlender. Lovins heads up Natural Capitalism Solutions, and she’s a sought after speaker around the wo...Show More

55:08 | Dec 31st, 2015

Our Microbes, Ourselves, Dec. 31, 2015: Roughly one hundred trillion bacteria are living, and gorging, in our gut–all the more so during the indulgent holidays. Microbes influence our health and well-being, by affecting our gut directly, as well as t...Show More

25:49 | Dec 29th, 2015

Hunter Lovins – Regenerative Economics (Starts 2:42) One of the world’s leading voices for the environment is urging the world to work for even more than a sustainable economy.  She says it’s time for a regenerative economy.  That’s the message from ...Show More

24:42 | Dec 22nd, 2015

Climate Change and Cities (starts at 5:05)  Sea level rise, severe storms, heat waves – these are just a few of the challenges cities might be facing as the climate changes in the next few decades.  So how should they adapt to cope with such events? ...Show More

24:33 | Dec 17th, 2015

What You Can Do About Global Warming (starts at 5:20): We interview Craig Hover, author of A World to Come Home To: Ending Global Warming in Our Lifetime. Craig is a licensed professional engineer with more than 30 years of engineering, project and f...Show More

25:26 | Dec 8th, 2015

Today, Dec. 8, we offer the following feature: Changing Climate, Changing Policy (start time: 7:06): As political leaders are still hammering out an accord at the UN Climate Summit, or COP21, in Paris, to rein in global warming, today we discuss the ...Show More

23:26 | Nov 27th, 2015

What is graduate school and how does it differ from the undergraduate experience?  What drives people to go through another 4
or more years of school? Today’s show features some people who might be able to tell us about the grad school experience...Show More

25:32 | Nov 17th, 2015

Today we had a terrific show with two local guests.  First, Sarah McQuate, Post-Doc at the University of Colorado joins us to talk about CUCafe, a student run group committed to creating dialogues and safe spaces for underrepresented student on campu...Show More

24:04 | Nov 10th, 2015

In today’s show we offer the following feature: The Horse (starts at 6:25)  Next to our connection with dogs and cats, perhaps the deepest bond humans have developed over time is with horses.  In fact, hands down, the horse has done more for us than ...Show More

24:09 | Nov 3rd, 2015

Mighty Microbes (start time: 5:45): Microbes – fungi and bacteria and probably viruses — are essential to life on Earth. They’re found in soil and water and inside the human gut. There’s a lot happening these days in microbiology, as scientists try t...Show More

24:06 | Nov 1st, 2015

Brains (starts at 4:35) This week on How on Earth we interview Professor Marie Banich, from the University of Colorado here in Boulder. Dr Banich uses cutting edge methodologies, particularly structural and functional MRI, to examine the role of the ...Show More

25:32 | Oct 23rd, 2015

Beyond Words (starts 5:00) Last week, we brought you excerpts from an interview with MacArthur Genius Grant Award winner, scientist and naturalist, Carl Safina, about his ground-breaking book:  Beyond Words – What Animals Think and Feel.  Last week’s...Show More

24:49 | Oct 14th, 2015

Up Close and Personal – Astrophysicist Joel Parker (starts 3:00)  talks about why he volunteers to educate people about science and outer space. Beyond Words:  What Animals Think and Feel, by Carl Safina.  (starts 4:10) We talk with MacAurther Grant ...Show More

24:46 | Oct 7th, 2015

GMOs (start time 5:35) An interview with Dr Sharon Collenge, an ecologist at the University of Colorado. Dr Collenge is an advocate of using new genetic technologies to make slight modifications to plant genomes which can increase yield, protect agai...Show More

23:43 | Sep 30th, 2015

Rock Arch Stability (Starts 5:24) How on Earth’s Daniel Strain  talks to Jeffrey Moore, a geologist who studies the West’s iconic rock arches — and watches them for signs that they’re about to collapse.   Neonicotinoids and Silent Spring – (Starts 15...Show More

24:08 | Sep 16th, 2015

This week on How on Earth, we speak with Dr Paula Hoffman, a neuropharmacologist – she’s scientist who studies what drugs do in the brain- who works on the genetics of alcohol and other drugs of abuse. Paula reviews the action of alcohol on different...Show More

24:16 | Sep 15th, 2015

Quantum Biology: Life on the Edge What do Enzymes and photosynthesis have in common?  Both are biological process that happen to rely on quantum mechanisims.  That’s right, particles tunnling through walls, shifting between particle and wave states: ...Show More

24:42 | Sep 1st, 2015

Habitat Exchanges (starts at 3:00):  The greater sage grouse is ruffling feathers all the way to Washington.  September 30th is the deadline for the US Fish & Wildlife Service to determine whether to list the grouse under the Endangered Species Act. ...Show More

25:08 | Aug 25th, 2015

Fingerprint Hand Gun.  (starts at 5:45) How on Earth’s Shelley Schlender talks with Boulder teen scientist Kai Kloepfer, who is creating a “Smart Gun” that won him first prize in engineering at the INTEL international science fair and a $50,000 grant...Show More

22:26 | Aug 19th, 2015

Science and Politics of Mining (start time: 6:49)  On August 5 an inactive mine named Gold King, which had been leaking toxins for years, spewed more than 3 million gallons of toxic sludge into a creek that feeds into the Animus River in southwest Co...Show More

29:27 | Aug 13th, 2015

Beth Bennett speaks with Claudia Tebaldi, a climate scientist at NCAR, about her work analyzing climate models to project climate change in the future. She addressed heat waves and local conditions and how these models can be used to make projections...Show More

24:17 | Aug 5th, 2015

When it comes to reducing greenhouses gases, every little bit helps, and that includes managing the greenhouse gases produced by how we grow our food.  Raising livestock and growing crops both generate greenhouse gases, and to gauge their impact, a n...Show More

23:37 | Jul 28th, 2015

Mooo-ving Cattle Near the Niobrara (starts 4:28) We talk with Steve Hicks, director of the USFW  Niobrara Wildlife Refuge complex near Valentine, Nebraska and join the Rocking Arrow Ranch on a cattle moo-oo-vve designed to help maintain the quality o...Show More

24:48 | Jul 15th, 2015

Pluto Flyby  (start time 1:00): Joel Parker discusses the New Horizons mission from the command center live! Case of the Rickety Cossack (start time 25:00): Beth Bennett talks to Ian Tattersall about his new book,  a fascinating précis of the study o...Show More

24:04 | Jun 30th, 2015

Real Food (start time 4:20): What we eat , and how we eat, is inextricably connected to our own health as well as the health of the planet.  Every decision we make—whether to bake a chocolate cake or buy it from Safeway or at a Farmer’s Market—is ful...Show More

22:40 | Jun 23rd, 2015

(Main Feature Start Time 6:00) We talk with CU students, former students and their advisor about how a student built science instrument called the Student Dust Counter managed to travel billions of miles on the New Horizons spacecraft, and what happe...Show More

13:13 | Jun 17th, 2015

Here is an extended excerpt with Dr. Gerald Pollack, University of Washington professor of Bioengineering. We talk about what barriers exist for scientists in today’s community and a new resource for research to be evaluated in a rigours and open min...Show More

24:25 | Jun 16th, 2015

How On Earth reporter Kendra Krueger caught up with Gerald Pollack, Bioengineering professor from the University of Washington to talk about the physical chemistry of water.  The science of water has a sordid past of controversy and dispute which con...Show More

28:35 | Jun 9th, 2015

We talk with Dr Thomas Johnson about his long standing interest in aging and how he used a nearly microscopic worm to investigate this process. Recently, he has transitioned into using mice to identify genes influencing the aging process. Some of his...Show More

24:13 | May 26th, 2015

An educator and perfomer, Len Barron first developed a piece about Einsteina and Bohr as a one man show, but then decided to evolve the project by enlist the help of 8 grandmothers to tell the story with their own added pizazz.  Not only was lively p...Show More

23:41 | May 19th, 2015

Birds v. Cats (start time 4:35): Spring is in full bloom on Colorado’s Front Range. Robins and other birds wake us up before the crack of dawn with their choruses.  This is also a time when many chicks will hatch and then fledge — a time when they ar...Show More

22:43 | May 12th, 2015

GOLD LAB SYMPOSIUM (start time: 4:26) We talk with Larry Gold, Founder of the Gold Lab Symposium, about this Friday/Saturday, free symposium at CU Boulder.  (check the website for previous talks, or to register for this weekend’s seminar).           ...Show More

24:02 | Apr 28th, 2015

Sage Grouse Saga (start time: 4:04): One of the most spectacular and flamboyant rites of spring is, arguably, the mating ritual of a the greater sage grouse, a chicken-like bird with a long tail, with spiky tail feathers.  Its historic range spans 11...Show More

25:57 | Apr 23rd, 2015

Ketones (start time 6:40) A growing body of scientific research demonstrates health benefits for many people with a diet that’s lower in carbohydrates, and higher in fats.  In fact, some of this research indicates great therapeutic benefits,.  One re...Show More

21:42 | Apr 8th, 2015

Today’s special edition of How on Earth, brought to you in conjunction with this week’s Conference on World Affairs is a conversation on Biomimicy as a new lens to view science and technology with Margo Farnsworth.  Margo has coached two Top Twelve g...Show More

25:01 | Mar 31st, 2015

Island on Fire (04:45): In 1783, a crack opened up in the Earth, began to spew out lava and ash and poisonous gases, and didn’t stop for eight months. The volcano was Laki, one of many volcanoes in Iceland, and the effects of the eruption went global...Show More

24:30 | Mar 24th, 2015

Climate Scientists (starts at 1:00): Climate scientists (scientists in general)  tend to steer clear of speaking out as activists about concerns that are politically volatile.  But that’s changing. Many climate scientists are stepping out of their re...Show More

23:24 | Mar 22nd, 2015

Nematode worms for studying Alzheimer’s (start time 4:57). Beth Bennett interviews Dr Chris Link from CU Boulder on his research into the genetic basis of Alzheimer’s Disease, ALS, and other neurodegenerative disorders. Hosts: Kendra Krueger, Beth Be...Show More

24:18 | Mar 10th, 2015

On today’s spring pledge-drive show we offer segments of two feature interviews. See extended versions also below. Both books are available to those who pledge at least $60 to KGNU. Call 303.449.4885 today. Rust: The Longest War (start time: 4:25) It...Show More

18:31 | Feb 25th, 2015

ATLAS Institute Today we are joined in the studio with Mark Gross of the Alliance for Technology, Learning and Society institute at CU and Alicia Gibb Director of The Blow Things Up Lab, one of the spaces part of the ATLAS department. ATLAS was forme...Show More

23:23 | Feb 18th, 2015

We speak with Eugene Harris, Professor in the Department of Biological Sciences and Geology at Queensborough Community College – part of  the City University of New York – about his new book,  Ancestors in Our Genome. In this feature, we discussed th...Show More