Great Moments In Science - with Dr Karl Kruszelnic

Great Moments In Science - with Dr Karl Kruszelnic

Australia

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

Episodes

How the Nobel Prize medals were hidden from the Nazis  

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 Nazis, as Dr Karl Kruszelnicki explains.

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

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  

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?  

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 Kruszelnicki argues.

Is air conditioning sexist?  

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 Kruszelnicki argues.

How humankind has changed our planet  

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?  

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

The power of lightning  

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 difficult as Dr Karl Kruszelnicki explains.

Why we need a leap second added to our clocks  

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?  

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, the geographers can now give us the answers.

The collective intelligence of animals  

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  

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  

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  

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.

The earworm you can't get out of your head  

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  

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  

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.

Life on Saturn's moon Enceladus  

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  

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'  

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.

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