Lodestones are dull, lumpy, and slate-gray, but their “magnetic intelligence” made them fabulously expensive.
Curiosity rover's recent report of methane on Mars isn't the first time the gas has been indicated. Does it necessarily mean that Mars harbors life?
Some archaeologists argue it’s essential to preserve the history of lunar exploration. But would it represent a claim of U.S. sovereignty over the moon?
The zone above 8,000 meters is known among mountaineers as the “Death Zone.” Why do most deaths in the high mountains occur at these extreme heights?
In the mid-20th century, the United States government invested in two major projects designed to control hurricanes by seeding the storm clouds.
Millions of people now live atop fault lines because long ago small communities gathered at fresh water sources.
Scientists and weather forecasters have been trying to understand tornadoes for over 100 years, but the average advanced warning is still only 14 minutes.
Does an increase in satellites mean we soon won't be able to see the stars?
Lee Smolin speaks on quantum gravity, the nature of time, the role of ethics in science, and the importance of realism.
The world's largest, deepest freshwater lake is home to hundreds of species that don't live anywhere else on Earth. But it's threatened by climate change.