Carbon cycle modeling and paleotemperature records argue that an asteroid impact—not volcanic fumes—was the main driver of the dinosaur die-off.

Researchers’ simulations suggest that small population sizes and inbreeding made Neanderthal populations vulnerable to chance fluctuations in population size.

The site, Corral Bluffs in Colorado, also reveals how plants evolved and how ecosystems rebounded after the asteroid impact.

Back from the brink of near-extinction, the Kirtland’s warbler population has grown and expanded its range.

A frog performs a balancing act in a region where amphibians are threatened.

The successful delivery spells hope for the related northern white rhino, which is facing extinction.

The most extensive global survey of plant extinctions to date reveals cause for concern.

A survey reveals the disease has decimated populations in Central and South America and tropical Australia and contributed to the extinction of 90 species.

The blue lagoons of the Cuatro Ciénegas Basin provide a glimpse into the planet’s ancient past.