Between 2.5 and 4 billion years ago, a time known as the Archean eon, Earth’s weather could often be described as cloudy with a chance of asteroid. Back then, it was not uncommon for asteroids or ...

Noah Jäggi, Diana Gamborino, Dan J. Bower, Paolo A. Sossi, Aaron S. Wolf, Apurva V. Oza, Audrey Vorburger, André Galli, Peter Wurz MESSENGER observations suggest a magma ocean formed on proto-Mercury, ...

Carbon sustains life—but excess emissions are driving climate change. WWF is working to restore balance and protect our planet’s future.

"We don't know a planet like this." That was the reaction of meteorologist Eric Holthaus to news that atmospheric carbon dioxide levels have reached heights not seen in the entirety of human existence ...

We investigate the physical characteristics of the Solar System’s proposed Planet Nine using modeling tools with a strong heritage in studying Uranus and Neptune. For a range of plausible masses and ...

(CNN) -- "We don't know a planet like this." That was the reaction of meteorologist Eric Holthaus to news that atmospheric carbon dioxide levels have reached heights not seen in the entirety of human ...