The study of ancient lava formations on Mars is the most complete to date from a series of observations conducted on the ...

Sacrifices of “sun stones” occurred around the same time a volcanic eruption in 2900 BC dimmed the sun throughout Northern ...

Using ice core samples, researchers linked a natural disaster with a trove of nearly 5,000-year-old artifacts discovered at ...

Everyone knows about the mass extinction that ended the Age of Dinosaurs. About 66 million years ago, a seven-mile-wide ...

Deep under the frozen desert of western Antarctica, a hidden danger slumbers. Lurking beneath the massive, 1–2 ...