EnvironmentFish that picks its work partners wisely Coral trout work together with moray eels to winkle out hidden prey – and they skilfully decide both when to collaborate and which eels are best News
LifeTrippy tots: How to see the world as a baby We've all been there, and none of us remembers. But psychedelic drugs, love and travel are just some of the ways we can roll parts of our brain back to infancy Features