Just steps from the center of Tikal, a 2,400-year-old Maya city in the heart of modern-day Guatemala, a global team of researchers has unearthed a buried altar that could unlock the secrets of a ...

Scientists have determined the reddish-brown rock art found in a cave on Indonesia's Sulawesi Island is more than 44,000 ...

We're pausing our live coverage of the war in Ukraine. We'll be back with any breaking news, but in the meantime you can scroll down to catch up on today's developments. And here's a summary of ...