Did plants nearly wipe out all marine life on Earth—twice?

UC College of Arts and Sciences Professor Thomas Algeo has been studying the planet's five major mass extinctions since the ...

Arrowhead marks found in Central Asia could prove the existence of Homo sapiens 80,000 years ago

Unretouched triangular microlithic projectile points have been identified from their impact traces in the oldest occupation layers of the Obi-Rakhmat site in Uzbekistan, dating to 80,000 years ago.

Arrowhead points found in Central Asia could prove the existence of ‘Homo sapiens’ 80,000 years ago

Tiny triangular-shaped flints from arrowheads found in Uzbekistan shed light on how the first settlement of ‘Homo sapiens’ – ...