The Sahara was once a grass and shrub-covered steppe. Could this ever happen again?
Wildfires are burning the West Coast, hurricanes are flooding the Southeast — and some of those storms are rising from the dead.
Planets aren't the only things in the solar system with auroras. Comets can have them too, data from the European Space Agency's Rosetta mission has revealed.
Divers in Southeast Asia have located the lost wreck of what's thought to be a U.S. Navy submarine that sank in 1943 after it was attacked by Japanese aircraft.
Scientists around the world are creating dozens of unique vaccine candidates to fight the novel coronavirus — and they're doing it at unprecedented speeds.
Researchers at MIT have developed a new method called targeted dream incubation (TDI) for planting suggestions that can shape a sleeper's dreams.