A speculative paper argues that ancient planetary flybys may have helped trigger some of Earth’s mass extinctions.

Scientists are increasingly worried we may be witnessing the start of the “sixth mass extinction” – the first to be caused by ...

Earth’s history has been shaped by five mass extinctions—catastrophic periods when life changed so dramatically that entire ...

Hundreds of species have gone extinct in recent centuries, but losses are few among larger classification levels, meaning we are not witnessing a mass extinction just yet, according to a study ...

What if Earth's great extinctions were not only due to asteroids or volcanoes, but also to the passage of wandering planets?

In school, we learned about the asteroid that wiped out an estimated 76% of all creatures. Scientists now call this the fifth mass extinction. You're reading that correctly: throughout Earth's history ...

One of the persistent claims made across the twentieth century is that humans are causing mass extinction of species, both in rate and numbers, unseen since the end of the age of dinosaurs. I ...

New research uncovers a lost world of strange crocodile relatives that once thrived across Australasia alongside early humans.