Now we have the opposite problem: Obama says UFOs are real and the world shrugs.

While idea may violate Occam’s razor, “it remains a speculative but logically open alternative,” says biologist Robert Endres ...

Survival of the fittest. Nature red in tooth and claw. The common view of natural selection is based solely on the individual: A trait allows an organism to out-compete its rivals and is thus passed ...

Obama claimed aliens are real in a podcast clip that went viral this weekend, then walked back his declaration with a clarification Sunday night.