Consciousness could be a fundamental part of reality, like gravity or matter, according to this controversial theory.

Whether or not we're alone in the universe is one of the biggest questions in science. A recent study, led by astrophysicist Nikku Madhusudhan at the University of Cambridge, suggests the answer might ...

What would it mean for humans if there were another species out there, and how big is the challenge when the human species is just a speck among others in space? The bigger problems and challenges ...