This fossil is 13 million years older than any ant fossil found before—and reveals a sophisticated predator that lived alongside the dinosaurs.

Excavations on unpromising mounds in the Iraqi desert revealed Sumer’s earliest city. Surviving relics and a rebuilt temple have given experts more clues about the ancient metropolis of Eridu.

Water from both volcanic rocks and deep mantle melted Earth's crust 1.6 billion years ago. This long-lasting melting formed ...