Surprising new fossil evidence undermines the idea that there was ever a mass extinction on land – and may force us to ...

M ost scientists agree that five events in Earth’s history qualify as “mass extinctions”—defined as events where more than three-quarters of estimated species are wiped out. These ordeals were caused ...

The one two-punch would lead 85 percent of marine species to disappear—and come to be known to paleontologists as our world’s first mass extinction. Extinction is a fact of life.

While life on Earth does usually find a way, it is not without some intense past–and future–periods of mass death. Extinction is not exclusive to dinosaurs.Our planet has gone through at least ...

Yet the past 400 years have seen 89 mammalian extinctions, almost 45 times the predicted rate, and another 169 mammal species are listed as critically endangered. Therein lies the concern ...

According to Robert Watson, former chair of the UN’s Biodiversity Panel (IPBES), a true mass extinction means losing at least 75% of species. So far, we’ve lost about 2% over the past 500 years.

Mass extinctions have occurred five times in Earth’s history, each resulting in the loss of at least 75% of species. ... Unlike past extinctions driven by natural events, ...

The K-Pg extinction is the most recent of five events in Earth’s history that scientists consider mass extinctions, defined by paleontologists as events where more than 75 percent of species vanish ...

If the top five major mass extinctions in the paleontological record each killed off at ... the IUCN has confirmed fewer than 1,000 extinctions from the past 500 years–just about 0.1 ...

Has Life on Earth Survived More Than Five Mass Extinctions? Scientists aren’t just arguing whether humans are causing a sixth mass extinction event now, but whether many more occurred in the past ...