Bruise colour, DNA tests and Lightning

Can our eyes change colour? What would happen if a planet disappeared from our solar system? Why don't we all have the same sense of taste? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith. 

Should you keep your tent flaps open? What happens to helium balloons when you let them go? Why does bottled water have a use by date? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith. 

How do birds hear if they have a hole through their heads? Where does matter come from? Just some of the questions put to Dr Karl this week for the Up All Night science phone in. 

How heavy is the Earth? How do snakes digest huge meals? Should I fear falling bullets? We take on these questions and more in this Naked Scientists Question and Answer show! We'll discuss the ideal hair for head lice, the mechanics of using a straw and why men's bits shrink in t ...  Show more

There can't be many people in the world who've saved lives in hospital emergency rooms and also helped care for the wellbeing of astronauts in space – but Kevin Fong’s career has followed a singular path: from astrophysics and trauma medicine, to working with NASA, to becoming an ...  Show more

#078

It's one of life's most head-scratchy questions, and one of the most popular chemistry mysteries for youtubers. So let's get to the bottom of this crazy, shape-shifting substance, and finally find out why cornstarch and water do that thing!

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