The record sheds light on the climate early humans experienced when they were spreading out of Africa. A tree-ringed African ...

Smithsonian researchers trekked to a remote site in northern Canada to collect four-billion-year-old rock samples that could ...

An international team of scientists have unlocked a key piece of Earth's evolutionary puzzle by decoding the structure of a ...

Yellowstone National Park’s famoushot springshave long fascinated visitors with their vibrant colors and steaming pools. For microbiologists, these extreme environments offer a unique glimpse into ...

Earth's magnetic field was so weak it almost disappeared. Then, seemingly out of nowhere, complex life emerged.