A 410-million-year-old fossil shows ancient lichens were shaping Earth’s surface long before forests took root.

Twenty-five years ago, humanity made a significant leap into permanent space habitation. On November 2, 2000, NASA astronaut ...

Researchers uncovered a 2.75–2.44 million-year-old site in Kenya showing that early humans maintained stone tool traditions for nearly 300,000 years despite extreme climate swings. The tools, ...

Learn how early hominins crafted the same sharp-edged Oldowan tools through 300,000 years of climate change, revealing one of ...