When dinosaurs evolved into birds, they had to adapt their arms into wings in order to take flight a process that altered their skeletal structure.
A series of NASA satellite images has revealed the shocking decline of water levels in the Aral Sea, a massive environmental disaster dubbed “the quiet Chernobyl.”
Eight years ago, a much-discussed study estimated that there were 304 million lakes on Earth—but a careful count reveals that the number is closer to a third of that.
The octopus has inspired much technological innovation, and with good reason.
An extraterrestrial spacecraft lurking in a satellite's orbit near Earth would be able to see city lights and pollution in our atmosphere.
Fossilized, primitive amphibians with odd-looking appendages, some with extra toes and deformed shapes, suggest the ability of some vertebrates to regenerate or regrow...
Among Leonardo da Vinci's most famous paintings is a portrait of a woman holding an ermine, but a new analysis shows there's a lot more to it than that.
Sophisticated oceangoing canoes and favorable winds may have helped early human settlers colonize New Zealand, a pair of new studies shows.
The eruption at Japan's Mount Ontake volcano caught hikers by surprise this weekend. More than 250 people were exploring shrines and resorts at the 10,062-foot-high peak, the...
An archaeologist who has been part of the restoration and excavation effort at Turkey's Tokat Castle believes he has uncovered the dungeons where Vlad the Impaler was once...