LifeLobster krill fight off big penguins with their tiny pincers Penguin-mounted cameras show that 7-centimetre-long crustaceans can sometimes fend off attacks from predators 10 times as large News
HumansWe may have got the evolution of our big brains entirely wrong Many scientists think that our big brains evolved to help us cope with the complexities of social living, but a model suggests it was more to do with finding food and lighting fires News