Through carbon dating, researchers have ruled that the artifacts are between approximately 11,700 and 12,900 years old, a time when Ice Age temperatures had returned after a brief warm period.

Far below the surface of Mexico’s Yucatán Peninsula, a flooded labyrinth of limestone tunnels has quietly guarded one of the most haunting fossil troves of the Ice Age. In the darkness of a submerged ...

Earth’s path around the Sun is not a fixed racetrack but a slowly shifting orbit, and those subtle changes have a long history of reshaping the planet’s climate. As astronomers refine how these ...