How our ancestors drilled and filled rotten teeth
Long before humans invented writing, the wheel and civilisation, they learned how to drill rotten teeth to relieve the pain of tooth decay. Image: Claudio Tuniz
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Author: Colin
First life may have been forged in icy seas on a freezing Earth
Did life begin in the freezer? Early Earth may not have been as hot and hellish as we thought. In fact, it may have become a snowball around the time life first emerged. Image: Maarten de Wit
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Do toddlers learn like chimps?
Humans rely so much on a culturally accumulated body of knowledge. So have we lost the ability that other apes have to invent our own solutions to basic problems? Image: Tambako the Jaguar
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Our first sex with Neanderthals happened 100,000 years ago
IT WAS a two-way street. Many people carry ancient Neanderthal DNA in their genome as a result of cross-species liaisons around 50,000 years ago. Now it seems that some Neanderthals carried our DNA, too. Image: Bence Viola
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What would happen to you if gravity stopped working?
We have all experienced the force of gravity. It is what happens to you when you jump up into the air. Disappointingly for anyone with ambitions to be Supergirl or Superman, we tend to fall right back down to the ground. But what if we could switch gravity off? Image: Charlotte May Godfrey
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