Nearly 500 Mesoamerican monuments revealed by laser mapping—many for the first time

Stem Cells Help Lizard Regenerate a Perfect Tail for First Time in More Than 250 Million Years

'Lost extinction,' uncovered for the first time, claimed more than 60% of Africa's primates

'Rosetta Stone of Supernovas': Exploding Star Seen in Real Time | Astronomers are calling it the “Rosetta Stone of supernovas,” as it could lead to an early warning system for doomed stars.