An astronomer’s whim and sharp eye have led to the discovery of a city-sized moon orbiting Neptune. Designated S/2004 N 1, the roughly 20-...

"Dreams are the touchstones of our characters." - Henry David Thoreau Dreams have fascinated philosophers for thousands of y...

Whipping up a batch of stem cells just got easier. A new recipe for transforming adult cells into embryonic-like ones calls for a chemic...

Giant, distant earthquakes may help scientists identify places where humans are liable to set off smaller tremors when they inject fluid d...