"Now there are only a few grassy species." Looy picked up a spruce cone. Pollen from the trees around us might be preserved inside. She believes that the Permian extinction was caused by acid rain ...

This extinction event marked the end of the Permian period and the beginning ... The tropics became a “dead zone,” where ...

From an Australian frog that swallowed its own eggs to woolly mammoths, scientists are getting ever closer to being able to bring long-lost species back from the dead. Millions of years ago ...

It is referred to as the Permian-Triassic extinction event because it ... 80 percent of the planet’s animal and plant species were dead. There are other factors that may also have contributed ...

However, clams took over the oceans in the aftermath of the end-Permian extinction, along with oysters, snails, and slugs. Earth’s largest mass extinction eliminated a lot of marine species. But it ...

About 252 million years ago, upward of 80% of all marine species vanished during the end-Permian mass extinction—the most extreme event of its kind in Earth's history. What followed was a ...

The mass extinction that ended the Permian geological epoch, 252 million years ago, wiped out most animals living on Earth. Huge volcanoes erupted, releasing 100,000 billion metric tons of carbon ...