A group of prominent biologists and philosophers announced a new consensus: There’s “a realistic possibility” that insects, octopuses, crustaceans, fish and other overlooked animals experience ...

What gives rise to human consciousness? Are some parts of the brain more important than others? Scientists began tackling these questions in more depth about 35 years ago. Researchers have made ...

An unprecedented brain study has delivered fresh clues about consciousness—suggesting it's more about perception than planning. Two leading theories went head-to-head, but neither emerged victorious.