A gene named after sonic the hedgehog is all that separates scales from feathers

The part played by beauty in sexual selection

Seeking answers to your science questions? Ask our ...

If you can work out why you’re losing your hair, you’re one step closer to finding the treatments that can help

Mass extinctions and evolutionary leaps, from bacteria to Homo sapiens

Quiz of the week 1) What is the dispersal ...

They’re often depicted as huge, scaly beasts, but new discoveries are changing our beliefs about the creatures that once stalked our planet