Dr Karl's Great Moments in Science

Dr Karl's Great Moments in Science

Australia

The universe is a strange and wonderful place and, in his Great Moments, Karl has scaled the highest peaks as well as turned over the pebbles to see what's underneath.

Episodes

Ants use brains and brawn to share the load  

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?  

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

Fly eyes inspire solar panels  

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  

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

How on Earth do planes fly?  

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?  

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  

Vomiting may be disgusting but the physical processes behind it are actually beautifully choreographed, says Dr Karl.

Sharing the scent of fear  

Fear can be catching, and it's shared by smell. Dr Karl sniffs out what we know about the scent of fear.

How does a python kill its prey?  

They may be called a boa constrictor but we've only just learnt how pythons really kill their prey. Dr Karl squeezes out the heart-stopping truth.

The science of sinkholes  

Sinkholes seem to happen out of the blue, swallowing up cars, houses or even whole streets. Dr Karl gets stuck into the science of sinkholes.

Life's little risks all add up  

Which is more of a risk to your health: living in New York for two days or eating 1000 bananas? Dr Karl weighs up the micromorts of life.

How much do clouds weigh?  

They may look fluffy, but your 'average' cumulus cloud is no lightweight. Dr Karl explains the physics that keeps clouds afloat.

The world's most hackable car  

Off-road driving takes on a whole new meaning in the final part of Dr Karl's series on the rise of car hacking. And this is just the beginning ...

How to hack a car  

Cars are really a network of hackable computers, as Dr Karl discovers.

Honk if you're being hacked  

Dr Karl goes back to the beginning of the car hacking era in part one of a three-part series.

The coolest club on Earth  

You have to be pretty thick skinned to join the 300 Club. Dr Karl explains what it takes to survive the initiation ritual.

How much anaesthetic will knock you out?  

How do doctors work out how much anaesthetics to give people? Dr Karl carves up the figures.

Surprising Sun facts  

Did you know our Sun has long-lost siblings? Dr Karl runs through some surprising facts about that big ball of nuclear energy in the sky.

Running off a hole in the heart  

It seems that exercise can reduce the risk of congenital heart disease - if you are a mouse - says Dr Karl.

Brontosaurus: what's in a name?  

Brontosaurus is back - at least in name. Its reinstatement as an official dinosaur is a win for the splitters, says Dr Karl, and the lumpers just have to lump it.

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