From our perspective, guppies lead simple lives—eating, reproducing, and, after a couple of years, dying. Apply a little evolutionary pressure, though, and they can evolve larger brains that make them ...

Scientists have long suspected that big brains come with an evolutionary price — but now they've published the first experimental evidence to support that suspicion, based on their efforts to breed ...

NASA is on a mission to get humans back on the Moon, with the goal of boots on the surface in 2025. Helping NASA achieve this mission is one of the most distinctive and rarest planes in the sky: a ...