Great Moments In Science - with Dr Karl Kruszelnicki

ABC Radio National


From the ground breaking and life saving to the wacky and implausible, Dr Karl Kruszelnicki reveals some of the best moments in science.

Looking for recently uploaded episodes
Mass of a proton: part one

07:08 | Dec 11th, 2018

The Universe is made of atoms — but what are atoms made of?

Cube-shaped wombat poo

07:18 | Dec 4th, 2018

Have we finally figured out how wombats make cube-shaped poo!?

Do fish drink water?

06:21 | Nov 27th, 2018

The answer to this question is a little surprising, not least because it involves wee.

Black hole in the Milky Way: part two

07:25 | Nov 20th, 2018

Astronomers have seen stars and superhot gas flying in orbits that bring them very close to the supermassive black hole in the middle of our galaxy — and this has taught us a huge amount about the nature of black holes.

Black hole in the Milky Way: part one

07:09 | Nov 13th, 2018

Black holes have no size, but have a huge mass — and there's an enormous one right in the middle of our galaxy.

Geotagged photos

06:16 | Nov 6th, 2018

Are you accidentally sharing your precise location, whenever you upload a photo?

Measure Earth

06:44 | Oct 30th, 2018

Reckon you could measure the circumference of the Earth using just a stick and some basic geometry?

Cigarettes radioactive

06:45 | Oct 23rd, 2018

You've probably heard cigarettes are bad for you — but did you know tobacco contains radioactive material?

Alkaline diets

08:08 | Oct 16th, 2018

It's said that the 'alkaline diet' can help you lose weight, and fight off cancer — but it looks like these claims don't stand up.

Kiss the Sun: part two

06:45 | Oct 9th, 2018

After hearing about the Parker Solar Probe's mission to the Sun, now Dr Karl is taking a closer look at how it'll survive this fiery journey.

Kiss the Sun: part one

06:50 | Oct 2nd, 2018

There's still a lot we don't know about the burning ball of gas that sustains life on Earth — but the Parker Solar Probe could help.

How to snap spaghetti: part two

05:26 | Sep 25th, 2018

For some snapping spaghetti is sacrilege — but for others it’s science.

How to snap spaghetti: part one

05:06 | Sep 18th, 2018

From spaghetti strands to trees to nanotubes — we need to know about the physics of rod-like structures.

Snooping microphones in your home?

07:37 | Sep 11th, 2018

Many of us have microphones in our homes, attached to smart phones and personal assistant devices.

The faults in our bodies

06:20 | Sep 4th, 2018

Our bodies are a marvel of sophisticated engineering — almost without exception.

Mapping DNA to save lives

06:37 | Aug 28th, 2018

DNA can help us work out family trees, catch bad guys ... and now as a tool in emergency medicine.

The loneliest ATM

04:56 | Aug 21st, 2018

Hint: the loneliest ATM is in a very, very cold place.

Do ships have an effect on sea level?

09:16 | Aug 14th, 2018

Plunking yourself into a bath fairly full with water makes the water level rise — and overflow. What about ships and the ocean?

Goldfish memory

06:21 | Aug 7th, 2018

The poor old goldfish has be slandered for far too long.

Are vitamins always good for you?

06:31 | Jul 31st, 2018

Having more vitamins will make you healthier... right?

Wasted food

06:18 | Jul 24th, 2018

Humans waste a huge amount of food every year.

Daddy long legs

06:31 | Jul 17th, 2018

Fact or fiction: Daddy-long-legs are the most poisonous spiders in the world?

Anaesthetic bomb

05:55 | Jul 10th, 2018

Could a villain or hero knock out a room full of enemies with a so-called 'anaesthetic bomb'?

Humans vs volcanoes

07:06 | Jul 3rd, 2018

Which would win*: humans or volcanoes? (*In a fight over carbon emissions)

The dunes of Pluto

06:42 | Jun 26th, 2018

Yup, there are dunes on Pluto — and in other parts of our Solar System.

A1 vs A2 milk

07:04 | Jun 19th, 2018

Is it worth paying more for A2 milk? What's the evidence that it might be better for you?

Cockroach milk

05:53 | Jun 12th, 2018

Is "cockroach milk" the next "superfood"? Do cockroaches even make milk!?

Sightseeing from Orbit

05:35 | Jun 5th, 2018

Can an astronaut really see the Great Wall of China from space?

Road trip to future travel

05:57 | May 29th, 2018

130 years ago one woman went on the first road trip and made history. Is it time for another change in transportation?

Gunpowder vs sandwich

05:33 | May 22nd, 2018

Which do you think packs more punch — gunpowder or a sandwich?

Why are whales so big?

06:02 | May 15th, 2018

Whales are the giants of the marine realm, and we've only recently discovered why they're so huge.

Trees have senses too

06:00 | May 8th, 2018

How do trees face an incoming threat if they can't move, see, or hear?

The Wood Wide Web

05:19 | May 1st, 2018

They may not be able to walk, but trees do talk — at least to each other.

Trees are made from air

06:01 | Apr 24th, 2018

Trees are solid and dense. However, they're made from air. Wait, what?

Coal's hidden health cost

06:15 | Apr 17th, 2018

Sulphur dioxide pollution from coal-fired power stations can have bad health effects — but who picks up the bill, and could power stations be doing more?

Speaking in tongues

06:20 | Apr 10th, 2018

Imagine waking up one day and speaking with a different accent — with no control over it! Thanks to a very rare syndrome, this can actually happen.

The hummingbird: a furnace with feathers

06:24 | Apr 3rd, 2018

Hummingbirds have a suite of incredible and unique features. However, one of their most important traits can lead to an early death.

Aboriginal stories accurate

06:16 | Mar 27th, 2018

For thousands of years, Australian Aboriginal people have accurately passed down information from one generation to the next using oral traditions.

Phone porting and identity theft

06:03 | Mar 20th, 2018

Are you doing everything you can to stop thieves from stealing your identity and 'porting' your phone number?

Fat is a beautiful organ

05:53 | Mar 13th, 2018

There's currently a battle against the bulge — but is fighting fat really the healthiest path?

Doomsday seed vaults

06:07 | Mar 6th, 2018

You may have heard of the Doomsday Vault — but scientists have gone even further to save the world's most important seed stocks.

Arsonist birds

05:17 | Feb 27th, 2018

Birds have been known to use all sorts of tools — but surely they wouldn't be using fire?

Dark matter

05:37 | Feb 20th, 2018

About 95% of the mass in the universe seems to be missing — what's going on!?

A truck that's faster than the internet?

06:01 | Feb 13th, 2018

If you want to transport data quickly, could a truck be the best option?

Tennis grunting

05:41 | Feb 6th, 2018

Is there any evidence that grunting in a tennis match will improve your game?

Super-hot planet

05:51 | Jan 30th, 2018

Is it possible for a planet to be hotter than a star?

Chewing gum

06:25 | Jan 23rd, 2018

What really happens when you swallow chewing gum?

Alcohol & Antibiotics

05:35 | Jan 16th, 2018

They're two drugs you shouldn't mix... right?

Asteroid belt 2

06:23 | Jan 9th, 2018

Just how many asteroid belts are there in the solar system?

Asteroid belt 1

07:22 | Jan 2nd, 2018

What does an asteroid belt actually look like?

Carrots & Night Vision

05:36 | Dec 26th, 2017

Do carrots really help you see in the dark? Or is it just a trick to get kids eating more veg?

Mpemba effect

05:34 | Dec 19th, 2017

If you want to freeze some water, you might want to heat it up first.

Coffee naps

05:16 | Dec 5th, 2017

Is it better to have caffeine, a nap, or both?

Predicting earthquakes

05:56 | Nov 28th, 2017

Are scientists getting closer to being able to predict when massive earthquakes will strike?

Mitochondria - Fiery Powerhouses

05:24 | Nov 21st, 2017

How do mitochondria convert food into fuel that our cells can use?

Why we tell lies

05:40 | Nov 14th, 2017

There's a lot we still don't know about what's going on in the brain of a liar.

Min Min lights

05:12 | Nov 7th, 2017

There are floating, fuzzy orbs of light in Western Queensland - what are they?


05:39 | Oct 30th, 2017

Flying insects seem to be disappearing from the sky — in big numbers.

Killer cats

06:02 | Oct 23rd, 2017

Your cute pet kitty cat may seem harmless — but Felis catus is also an efficient, highly flexible predator.

Why the sky is blue. For reals

05:50 | Oct 16th, 2017

For such a common question, this took a lot of answering.

The origin of spaghetti

05:19 | Oct 9th, 2017

An upturned bowl of 4000 year old noodles is the key to pasta evolution.

Can we detect lies?

05:55 | Oct 2nd, 2017

Despite what TV says, can you trust a Lie Detector?

Four leaf clovers not so lucky

05:09 | Sep 26th, 2017

Are four leafed clovers really that rare?

Dissing the dishwasher

06:39 | Sep 19th, 2017

Are dishwashers better than people when it comes to water, energy and cleaning?

Death by chocolate

05:52 | Sep 5th, 2017

Obviously chocolate is good for us - but what about for our pets?

Tricks of the Menu Trade

04:42 | Aug 29th, 2017

A new kind of engineer has been born.

Life after decapitation

05:31 | Aug 22nd, 2017

When the guillotine was introduced, the French became very curious about how long a body-less head could survive.

SOFIA: Holy flying telescope - part 2

05:17 | Aug 15th, 2017

What the Doctor saw when he flew in this baby, and the crazy engineering that let it happen.

Holy flying telescopes, part 1

05:24 | Aug 8th, 2017

You'd have to be crazy - or an astronomer - to get on board a plane with a jumbo-sized hole in it.

Cane toads used for pregnancy test

05:21 | Aug 1st, 2017

Cane toads - like mice and rabbits before them - were used for human pregnancy tests.

Why spiders don't go commando

04:19 | Jul 25th, 2017

Spiders dropping down on their silk thread never get caught twisting in the breeze, like abseiling commandos do. Because ... chemistry.

Bird brains - dense, not dumb

05:12 | Jul 18th, 2017

Some birds, especially parrots, songbirds and the entire crow family, are surprisingly intelligent - and not just compared to other birds.

Of mice, marijuana, memory and men

05:33 | Jul 11th, 2017

A recent study found that low dose THC from cannibas improved memory in older mice.

Origin of life

05:29 | Jul 4th, 2017

Did life begin on an invisible mountain range?

Ocean ridge secrets

04:34 | Jun 27th, 2017

The ocean ridge is the biggest mountain range on Earth. And it could hold the secret to where life began.

Childhood amnesia

04:38 | Jun 20th, 2017

No matter how memorable your childhood is, you probably won't actually remember it.

Can you beat the pokies? (Part 2)

04:46 | Jun 13th, 2017

How did Russian gamblers cheat US casinos out of millions of dollars? Dr Karl explains their scam - and the Australian connection.

Can you beat the pokies? (Part 1)

05:06 | Jun 6th, 2017

Poker machines are built to only pay back about 10 cents for every dollar you put in. But thanks to Putin and maths, it's possible to win.

Artificial uterus

05:12 | May 30th, 2017

An artificial uterus has been trialled for lambs, but why do we need one in the first place?

Minus-calorie celery claim leaves food for thought

05:36 | May 22nd, 2017

Celery is low in kilojoules but it's the energy it takes us to chew and digest that pushes us into negative calories.

Why we yawn

05:25 | May 15th, 2017

Yawning has all kinds of strange links to different aspects of human experience.

Animal poo times

05:45 | May 9th, 2017

Headlines don't get much punchier than "All mammals poop in 12 seconds ...".

Ponytail physics

04:47 | May 2nd, 2017

There's a lot of maths - and a bit of astronomy - behind the sideways swing of a ponytail.

The real cost of air pollution

05:44 | Apr 26th, 2017

It kills millions, and it costs trillions. Air pollution is killer number 5


05:18 | Apr 18th, 2017

Compared to other animals of the same size, humans just aren't that nutritious. Is that the only thing holding cannibalism back?

Pregnancy while pregnant

05:51 | Apr 10th, 2017

Can a woman get pregnant, when she is already pregnant? In other words, can she have two foetuses in her uterus, at different stages of development?

Cleaning up space junk

05:03 | Apr 3rd, 2017

The amount of junk in orbit is always increasing but cleaning it up is also essential for our future space operations, but it’s not going to be easy.

How much space junk is out there?

06:13 | Mar 28th, 2017

Space junk includes old satellites, spent rocket stages, dust from solid rocket motors and even coolant from obsolete Russian nuclear-powered satellites. But just how much is up there?

How the Nobel Prize medals were hidden from the Nazis

05:30 | Mar 21st, 2017

The gold in a Nobel Prize medal is dense enough to make a big impression when you try to take it through an airport X-ray scanner. It's also very resistant to being dissolved—but that didn't stop one chemist who needed to hide two medals from the Naz...Show More

What we know about misophonia, the 'hatred of sounds'

04:59 | Mar 14th, 2017

A condition called misophonia — where people adversely react to particular sounds, often with feelings of rage, terror, fear and panic — was first identified 20 years ago, but is only now starting to be better understood.

Paying service to the human lip

04:33 | Mar 6th, 2017

They can seal tight, suck, blow, whistle, hold and kiss. With hundreds of muscles and multiple layers of cells, the human lip serves a much greater role than we give them credit for.

Is air conditioning sexist?

05:02 | Feb 28th, 2017

For 50 years air conditioning in commercial buildings has been set using the Standard 55 guidelines. But many workplaces aren't staffed solely with 40-year-old men dressed in 60s business suits, and that's left women out in the cold, as Dr Karl Krusz...Show More

How humankind has changed our planet

06:28 | Feb 21st, 2017

From the formation of Earth until now, many factors have contributed to its changing state. But humankind has been a major contributor in a relatively very small period of time, as Dr Karl Kruszelnicki argues.

Could we capture and store energy from lightning?

04:51 | Feb 13th, 2017

Could lightning be used to power the planet instead of fossil fuels? Karl Kruszelnicki finds out.

The power of lightning

06:16 | Feb 7th, 2017

It take a unique series of weather factors to create the awesome power of lightning but when it 'strikes' it comes to earth with 1000 times more energy that a household electrical system and with more heat than the sun but capturing this energy is di...Show More

Why we need a leap second added to our clocks

05:51 | Jan 31st, 2017

As New Year's Eve ticked over to 2017, scientists added an extra second to atomic clocks to compensate for the Earth's variable rotation. But there are pros and cons to doing this, as Dr Karl Kruszelnicki explains.

What if the Earth stopped spinning?

05:38 | Jan 17th, 2017

We know that the rotation of the Earth is gradually slowing down. But what would happen if God, the devil or aliens suddenly and completely stopped our planet from rotating on its axis of spin? Luckily, thanks to improved knowledge about our planet, ...Show More

The collective intelligence of animals

06:33 | Dec 19th, 2016

There are many reasons animals of the same species congregate in groups. The collective intelligence of a flock helps protect and save energy, keep them on track when migrating and share food discoveries, as Dr Karl explains.

It's complicated: the sex life of coral

06:02 | Dec 13th, 2016

Being stuck in one spot, waiting for the full moon to pass and the perfect temperature to arrive, and your choice of mate left to the tide: when you're coral, reproduction is mind-boggling complicated, as Dr Karl Kruszelnicki explains

A brief history of coral

05:55 | Dec 6th, 2016

Coral polyps appear totally helpless at first. So how do they manage to survive, breed and form giant structures like the Great Barrier Reef?

The earworm you can't get out of your head

05:09 | Nov 29th, 2016

If you've ever had a song stuck in your head you'll know it's annoying. But as Dr Karl Kruszelnicki explains, it might be an evolutionary way of keeping us alert to attack or stay focused during repetitive tasks.

That new book smell

05:33 | Nov 22nd, 2016

Books, new and old, have a particular smell but what we call that 'new book smell' isn't always the same from book to book and even publisher to publisher as Dr Karl Kruszelnicki explains.

Life on Saturn's moon Enceladus

06:36 | Nov 15th, 2016

When the ancients looked to the stars and wondered if they were alone, they probably never imagined the possibility that Saturn's tiny moon Enceladus might host a strange underwater ecosystem, as Dr Karl Kruszelnicki explains.

The 2016 Nobel prizes for Physics and Chemistry

07:35 | Nov 8th, 2016

This year's Nobel Prizes saw scientists recognised for their work on unusual states of matter and the world's smallest machines. Dr Karl Kruszelnicki explains the science behind the discoveries.

The strange science of autophagy or 'self-cannibalisation'

06:12 | Nov 1st, 2016

The 2016 Nobel Prize in Medicine or Physiology was awarded for research into autophagy. The word literally means 'self-eating', and it refers to the phenomenon that happens inside cells where 'things' are broken down.

Overcoming chronic lateness

05:41 | Oct 25th, 2016

Are you a perfectionist, a crisis maker, a defier or a dreamer?Dr Karl Kruszelnicki discovers the four kinds of personalities that are especially prone to being chronically late—and what might help to change these habits.

Loud sounds can kill hard drives

06:18 | Oct 18th, 2016

In our complex world, the cure can sometimes be as bad as the original problem. For example, you would think that if you had a fire in a data centre, it would make sense to deprive the fire of oxygen by flooding the room with an inert gas. But what i...Show More

The Ig Nobel Prizes

06:39 | Oct 11th, 2016

Most of us have heard of the Nobel Prizes, awarded for work that is unexpected, important—and deep. But not everybody has heard of the comedy version, the Ig Nobel Prizes. In 2016, they were given for research involving rats in tiny trousers, pseudos...Show More

Wi-fi is watching us

06:02 | Oct 4th, 2016

Many of us access the internet, and the world wide web, via wi-fi. Wi-fi lets us into a fabulous world of shared knowledge and social interaction. On the flip side, it seems that wi-fi can look at us, and perhaps even spy on us. It can even recognize...Show More

Why do mozzies love some people but not others?

05:54 | Sep 27th, 2016

Why are some people mosquito magnets, while others seem to be blissfully bite-free?

Latin's most misused word: vomitorium

05:48 | Sep 20th, 2016

Even without having ever learnt the language, there is probably one Latin word we all know—'vomitorium'. Dredging through our memory banks, we all 'know' that the vomitorium was the special room where, back in rather debauched Roman times, gluttonous...Show More

Time travel is already possible

06:13 | Sep 12th, 2016

There are two types of time travel—into the future, and into the past. Past time travel might be impossible—but on the other hand, we already travel into the future all the time, as Dr Karl explains.

How a chemical in sunscreen attacks coral

05:53 | Sep 6th, 2016

From the cradle to the grave, Australians are taught to use sunscreen to avoid sunburn and skin cancers. But the universe is complicated, with unexpected links—and so, everything has a cost. In this case, the cost appears to be that one popular sunsc...Show More

Electric motors in bacteria (part 2)

06:17 | Aug 30th, 2016

Dr Karl Kruszelnicki is fascinated by how bacteria rotate their flagellum counter-clockwise, much like a manmade electric motor. But unlike the motors that humans make, this dynamic microscopic molecular machine is constantly being rebuilt and reconf...Show More

The microscopic high-tech wizardry of bacteria

05:29 | Aug 23rd, 2016

Dr Karl Kruszelnicki explains the microscopic but super-high-tech gee-wizardry of some bacteria that use propellers powered by self tiny assembling electric motors to swim in their environment.

How dangerous is it to refuel with the engine running?

05:56 | Aug 15th, 2016

We're instructed to stop our cars before refuelling, but how dangerous is it really? Dr Karl Kruszelnicki dispels some myths while staying on the safe side.

Movie releases of a chemical kind

05:40 | Aug 8th, 2016

There are two pretty tense moments in Hunger Games: Mockinjay, and scientists know this just from the chemicals given off by the audience who watched the film. Dr Karl Kruszelnicki explains how a shared scary cinema experience led to a fundamental di...Show More

Immortal jellyfish

05:19 | Aug 1st, 2016

Down through the ages, there have always been myths about immortality—that god-like ability to live forever. Marine biologists found a creature that comes closest to immortality—a tiny transparent jellyfish. Dr Karl Kruszelnicki explains.

Double yolk eggs

05:43 | Jul 26th, 2016

If you buy a lottery ticket every time you get a double-yolk egg because you're having a lucky streak you'll be disappointed to learn it's not as uncommon as we'd made to believe, as Dr Karl Kruszelnicki explains.

Coffee can be good for us (part two)

05:50 | Jul 19th, 2016

There is a growing body of evidence that coffee can have good effects our health but it's not a magic potion. Dr Karl Kruszelnicki looks at the evidence.

Coffee, it's good for you

06:16 | Jul 12th, 2016

There is a body of evidence that some of the side effects of coffee may actually be good for you, and they appear to have nothing to do with caffeine. But Dr Karl Kruszelnicki's grind is the observational studies that make up the 'statistics' behind ...Show More

Bitcoin and security

07:00 | Jul 5th, 2016

The way we spend money is changing with electronic transactions and new 'strange' currency like Bitcoin, but security is important and mathematics central to that, as Dr Karl explains.

Bitcoin and mathematics

06:23 | Jun 28th, 2016

The strange new virtual currency called Bitcoin relies on something more trustworthy than people or institutions. It relies on mathematics—in fact, 'trusty' one-way mathematics.

Value of money is based on trust

05:32 | Jun 21st, 2016

The worth of all currencies from stone coins to Bitcoins is based on people trusting the transaction system. Just ask the people of Yap, writes Dr Karl.

Bitcoin: from the beginning

06:07 | Jun 14th, 2016

How did the Bitcoin virtual money system get started? Dr Karl takes a bite out of history.

Can water burn leaves?

05:39 | Jun 7th, 2016

There may be a whole range of reasons why it's not good to water plants in the middle of the day, but is burning the plant's leaves one of them? Dr Karl investigates the physics of plants and water.

How clean and green is our digital world?

06:21 | May 31st, 2016

Today's technology looks so slick and clean as it brings magic to your screen. But behind the scenes, our data comes at a cost, says Dr Karl.

Zombies, pi and shotguns

06:25 | May 24th, 2016

Need to calculate pi while fending off zombies? Dr Karl has found a way to solve both your problems.

Raw milk: separating facts from fads

06:20 | May 17th, 2016

Not all raw foods are good for you. Dr Karl explains why raw milk is one of the world's most risky food products.

How long would it take a vampire to drain you of blood?

04:00 | May 10th, 2016

If you're a sucker for a good vampire movie, be warned ... Dr Karl takes two big bites out of the legend.

The time-travelling brain

04:17 | May 3rd, 2016

What would it be like to only live in the moment? Or to relive the past over and over again? Dr Karl explores the extreme range of memory.

Why do people talk louder when they drink alcohol?

06:05 | Apr 26th, 2016

Alcohol may get the conversation going at a party, but as the drinks flow you'll find it harder to tune in. Dr Karl explains how alcohol affects your hearing.

Why did the US lose the height advantage?

07:26 | Apr 19th, 2016

People in the US used to be among the tallest in the world, but now that honour goes to the Dutch. Dr Karl gets to the bottom of the slide in height.

How many places of pi do we need?

06:55 | Apr 12th, 2016

Pi is a very long and a very important number, but how many decimal places of it do we really need to know?

Can you make our heart stronger?

05:49 | Apr 6th, 2016

Dr Karl puts his finger on the pulse of research that suggests your heart can become stronger if it runs out of sync for a short while before its rhythm is restored.

How does the heart work?

06:20 | Mar 29th, 2016

Your life depends on the regular beat of your heart. Dr Karl explains how this mighty four-stage pump works.

Anti-gravity dream may take off

07:04 | Mar 22nd, 2016

The genius of Albert Einstein led us to gravitational waves — maybe someday another genius will work out how to make them!

The physics of gravitational waves

06:12 | Mar 8th, 2016

Gravitational waves distort the fabric of space-time. How? Gravity is geometry, explains Dr Karl.

The awesome origins of gravitational waves

06:21 | Mar 1st, 2016

The recently discovered gravitational waves were created under mind-boggling circumstances. Dr Karl goes into the beautiful and awe-inspiring story of their creation.

Dragonfly telescope shines a light on dark matter

07:21 | Feb 23rd, 2016

Sometimes a major discovery - like finding evidence to support the theory of dark matter - just requires a bit of creative thinking over a curry, as Dr Karl explains.

Two big physics problems

05:36 | Feb 16th, 2016

Why are the Higgs field and dark energy so weak? Find the answer and you could earn yourself a Nobel Prize, says Dr Karl.

Traffic button pushes beautiful design

06:23 | Feb 9th, 2016

Next time you're at the lights, stop to appreciate the humble pedestrian button. The design is so beautiful that even Oscar Wilde would approve, says Dr Karl.

The dark side of credit card theft

05:44 | Feb 2nd, 2016

Cybercriminals have set up highly developed businesses in the shady world of the 'dark net'. Dr Karl explains how they make money from stolen credit cards.

Credit card theft: why is pays to be careful

05:27 | Jan 27th, 2016

Criminals don't need to steal your credit card to get your information. There are many other sneaky ways they can nab your details, says Dr Karl.

Ants use brains and brawn to share the load

05:50 | Dec 15th, 2015

Ever wondered how tiny little ants coordinate a raid on the cat's bowl? Humans could learn a lot from the answer, says Dr Karl.

How are planets born?

05:44 | Dec 8th, 2015

Scientists recently witnessed the birth a planet the size of Jupiter. Dr Karl explains how planets are born from the apparent emptiness of space.

Fly eyes inspire solar panels

06:14 | Dec 1st, 2015

The eye of a 45-million-year-old fly can increase the power output of a solar panel by 10 per cent. Dr Karl is inspired by how an ancient insect helped solve a modern problem.

Emoji lords to release 67 new symbols

06:29 | Nov 24th, 2015

If you love smiley faces you'll weep with joy about the news we're about to get more emojis! Dr Karl reveals who holds the ultimate emoji power.

How do planes fly?

05:25 | Nov 17th, 2015

Seeing a plane get off the ground is an amazing sight! Dr Karl investigates the science of flying planes.

How many cells in a person?

05:51 | Nov 10th, 2015

It's a surprisingly hard question to answer, but Dr Karl has tracked down a reasonable estimate of the number of cells in the human body.

The beautiful act of vomiting

06:48 | Nov 3rd, 2015

Vomiting may be one of most disgusting experiences you can have, but the physical processes behind it are actually beautifully choreographed.