"The pace of change we’re seeing today is unlike anything we know of in the past 66 million years," said ecologist Jack ...

Human activity may be triggering the greatest extinction event since the asteroid impact that wiped out the dinosaurs, ...

Study warns that humans may be driving Earth toward a sixth mass extinction. The research shows species loss, but the future ...

Human activity may be setting the stage for the largest extinction event since the asteroid that wiped out the dinosaurs 66 ...

Scientists debate whether current extinction rates mark a planet-wide crisis or reflect a more nuanced reality, highlighting ...

For eons, Earth has experienced dramatic shifts, punctuated by five catastrophic mass extinction events that wiped out vast swathes of life. Now, a growing chorus of scientists is sounding the alarm: ...

Humans have wiped out hundreds of species — with many more on the brink or experiencing large declines in population. Some scientists have argued that we have entered a “sixth mass extinction” event ...

Arizonasaurus was an archosaur from the Middle Triassic.