Scientists break down the reasons why days are getting shorter—and the mystery they're still trying to solve about Earth's ...

Earth’s magnetic field weakened to a fraction of its usual strength, it allowed more harmful solar radiation to reach the surface ...

Earth has experienced both hot and cold periods over time, though warm times have been more common. That’s true of the last 485 million years, as seen in this timeline reported in 2024. Our genus, ...

The largest piece of Mars ever found on Earth has sold for just over $5 million at a Sotheby's auction in New York. But a ...

Sotheby's is putting some rare items up for auction, including what it calls the largest piece of Mars ever found on Earth.

Researchers have recreated the tumultuous beginnings of Earth, simulating what the planet was like just after its formation 4 ...

Research data suggests humans may have nearly gone extinct almost 1 million years ago, but scientists aren't sure why.

New data shows that CO2 levels have broken through 430 parts per million, an indication that human-caused global warming will continue to warp the environment.

Earth’s marine species, especially those at the tropics, were in trouble again about 419 million to 365 million years ago. This series of mass extinctions during the Devonian period eventually ...

New Southwest Research Institute-led modeling indicates the main belt asteroid (52246) Donaldjohanson may have formed about 150 million years ago when a larger parent asteroid broke apart; its ...

How did the dinosaurs go extinct? Most dinosaurs suddenly went extinct about 66 million years ago after an asteroid struck Earth.