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.
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
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.
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
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.
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
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.
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
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.
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
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.
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.
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.
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.
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.
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
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
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
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
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
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
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
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.
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