HumansWas our earliest ancestor a knuckle-dragger, or did it walk upright? Did Sahelanthropus, which lived 7 million years ago, walk on two legs like a modern human? It's complicated News
HumansKissing may have evolved in an ape ancestor 21 million years ago Rather than being a recent cultural development, kissing may have been practised by other early humans like Neanderthals and our ape ancestors News