Two weeks before his death in 2018, Stephen Hawking issued a chilling warning about the future of Earth, and now NASA has ...

When bursts of charged particles from the sun hit our planet, they mix with the thin gases high above Earth, exciting the air molecules. As that happens, the molecules give off the mesmerizing ...

Dust particles lofted high into the air would absorb and scatter sunlight, preventing it from reaching Earth’s surface. The lack of sunlight would cause global temperatures to drop rapidly by as ...

The Earth's gravitational field is pulling on air, and this pull ... One climber might have no trouble breathing, while the other can barely pull in enough oxygen to survive.

“It’s a part of our Earth that no one gets to witness,” he said ... sea ice and explore the glaciers near their base at Thule Air Base, about 750 miles north of the Arctic Circle and ...

Aristotle suggested that air was one of four elements that also included earth, water, and fire, and for 2000 years this was the prevailing view. But beginning in the 17th century, a new era of ...

In fact, wind exists because the sun unevenly heats the surface of the Earth. As hot air rises ... source of renewable energy that produces no air or water pollution. And since the wind is ...