Scientists manage to reverse Alzheimer’s in mice with nanoparticles – and believe it could work in humans too

It weighs as much as a gorilla and stands as tall as a emperor penguin — meet the UK’s biggest wild land animal

Underwater showdown: diver witnesses brutal duel between fish in Cornwall

The animal kingdom’s best dancers – from strutting birds to rhythm-loving spiders

German mayor critically injured in stabbing just days after election