Some biologists conclude that humans owe our present dominance to a mass extinction -- the K/T event that saw the end of the dinosaurs and cleared the way for mammals to diversify into all the ...

This graph plots extinction rates of marine animal ... Changes in sea level, in fact, accompanied each of the five mass extinctions, while only the K/T event has been persuasively linked to ...

In its 4.5 billion year history, Earth has undergone five mass extinctions and we are potentially in a sixth era of mass death. Today’s crocodylians are the surviving members of a lineage called ...

This wasn't the first mass extinction in our planet's history ... also known as the K-T extinction) left an indelible mark on Earth's biodiversity and evolution. It truly is one of science's ...

This story appears in the October 2019 issue of National Geographic magazine. Some scientists contend that we’re heading toward what would be the sixth mass extinction in the history of life on ...

This helped their system pinpoint the scenarios that best matched the fossil and rock records left behind after the mass extinction. The extinction itself—known as the K–Pg event—shattered ...

SALT LAKE CITY — Earth has experienced at least five "mass extinction" events throughout its existence, but some species have been able to survive these major shifts. Utah researchers say they ...