My husband was recently describing something that happened on a past holiday. It wasn’t a significant event, but it sounded pleasant. I, however, had no recollection of what he was telling me. He ...

Just like vertebrates, cephalopods — such as octopuses and squid — have elaborate brains. Neuroscientists are flocking to them for insights into how intelligence evolved. Three hearts; blue blood; no ...

Having a brain is so necessary to human experience that it’s almost impossible to imagine any life without it. However, many living organisms don’t have brains, and going back far enough in time will ...