Everything we do, every thought we've ever had, is produced by the human brain. But exactly how it operates remains one of the biggest unsolved mysteries, and it seems the more we probe its secrets, the more surprises we find.
Neil deGrasse TysonThe universe is almost 14 billion years old, and, wow! Life had no problem starting here on Earth! I think it would be inexcusably egocentric of us to suggest that we're alone in the universe.
Neil deGrasse TysonI am proud to be part of a species where a subset of its members willingly put their lives at risk to push the boundaries of our existence.
Neil deGrasse Tyson