Since the first sharks emerged in the world’s oceans nearly half a billion years ago, the world has gone through five major ...

The end-Permian mass extinction, which struck around 252 million years ago, was the most devastating biological crisis in Earth's history. Over 80% of marine species disappeared, leaving the ...

The end-Permian mass extinction, which occurred approximately 252 million years ago, wiped out over 80% of marine species, and its impact on land has long been debated.

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 ...

The end-Permian mass extinction occurred around 252 million years ago, and wiped out over 80% of marine species and 70% of terrestrial species due to extreme environmental changes including global ...

A mass extinction event wiped out around 90% of life. What followed has long puzzled scientists: The planet became lethally hot for 5 million years. Researchers say they have figured out why using a ...

Life—in its myriad forms and billions of years on Earth—hasn’t ever experienced as harrowing an event as the end-Permian mass extinction.Fittingly known as The Great Dying, this period saw ...

The biggest mass cataclysm of all time, called the end-Permian extinction, occurred 252 million years ago. ... Deeper in time, a mass extinction event that ended the Devonian Period, ...

“Geochemistry of the end-Permian extinction event in Austria and Italy: No evidence for an extraterrestrial component,” GEOLOGY, December 2004, v. 32, no. 12, p. 1053-1056.

Tropical riparian ecosystems—those found along rivers and wetlands—recovered much faster than expected following the end-Permian mass extinction around 252 million years ago, according to new ...

(CNN) — No species lasts forever — extinction is part of the evolution of life. But at least five times, a biological catastrophe has engulfed the planet, killing off the vast majority of ...