Several populations of Mexican tetra fish that live in darkness have independently evolved to need hardly any sleep, but the reason why is a mystery
Wild cavefish can somehow survive with almost no sleep at all
Related Posts
Our trust in society is eroding. We need to fight back
A recent scandal over food hygiene ratings shows how deception destroys trust within society. We need to fight back, says Jonathan R. Goodman
How to Feed the World review: Vaclav Smil’s take on future food supply has one big flaw
Are fish farms like this one in Greece truly becoming more efficient? Elena_Alex_Ferns/Alamy How to Feed the WorldVaclav Smil (Penguin Books) We had better hope that Vaclav Smil is wrong…