How did Earth transform from a hostile, acidic ocean world to one that nurtured life? Scientists at Yale and in Singapore ...

Roughly 300,000 years ago, our species first appeared on the African landscape before spreading globally and coming to ...

We suggest that as the Earth changed physically and chemically over time, its surface conditions allowed for a greater diversity of habitats for life. And these changes operate on geologic timescales ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

Elon Musk's internet satellites have been a game changer for people in rural areas, but scientists are alarmed that plans to ...

Certain birds that gave rise to today’s ducks and geese found sanctuary in Antarctica during a mass extinction event 66 ...

Near-Earth asteroid Bennu has a slim chance of colliding with Earth in 2182. If it does, the impact could trigger a global ...

In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...

The moon may still be geologically active, judging from the way the lunar far side is wrinkling as the moon contracts. At ...

Now, 100 years later, Nome is remembering its saviors ... had about 1,400 residents a century ago. Its most recent supply ship had arrived the previous fall, before the Bering Sea froze ...