The biggest mass extinction of all time happened 251 million years ago, at the Permian-Triassic boundary. Virtually all of life was wiped out, but the pattern of how life was killed off on land has ...

Volcanoes spewing carbon dioxide 250 million years ago heated the climate so much that extreme El Niño events became the norm, pushing most life on Earth past its limits. When you purchase through ...

A cataclysm engulfed the planet some 252 million years ago, wiping out more than 90% of all life. Known as the Great Dying, the mass extinction that ended the Permian geological period was the worst ...

The Great Dying at the end of the Permian Period 250 million years ago may have been amplified by El Niño events far stronger and longer lasting than any today. These mega El Niños caused wild swings ...

A new study reveals that a region in China's Turpan-Hami Basin served as a refugium, or "Life oasis" for terrestrial plants during the end-Permian mass extinction, the most severe biological crisis ...

Roughly 252 million years ago, Earth experienced its deadliest known extinction. Known as the Permian–Triassic Mass Extinction, or “The Great Dying,” this cataclysm wiped out over 80% of marine ...

(CNN) — A cataclysm engulfed the planet some 252 million years ago, wiping out more than 90% of all life. Known as the Great Dying, the mass extinction that ended the Permian geological period was the ...

More than 250 million years ago, life on Earth faced its most devastating crisis — a global event so severe that it wiped out nearly three-quarters of life on land and an even larger share in the ...

Ordovician-Silurian extinction - 444 million years ago The Ordovician period, from 485 to 444 million years ago, was a time of dramatic changes for life on Earth. Over a 30-million-year stretch, ...

Roughly 252 million years ago, Earth experienced its deadliest known extinction. Known as the Permian–Triassic Mass Extinction, or “The Great Dying,” this cataclysm wiped out over 80% of marine ...