LifeTrilobites used trident-like horns to fight over mates like stags Three-pronged weapons on the heads of Walliserops fossils suggest that animals first duelled in sexual combat at least 400 million years ago News
LifeLiving in trees may have given great apes vocal skills for consonants A comparison of consonant-like sounds in great apes suggests an arboreal lifestyle may have been a step towards complex speech in our ancestors News