great dying

A Volcanic Eruption with lava flowing down from the mountain. By Tetiana Grypachevska on Unsplash

We now know what caused Earth’s largest extinction event – and it is happening again

We now know what caused Earth’s largest extinction event known as the Great Dying - and it is happening again

The Blue Marble Dec 7 1972 Apollo 17 NASA

Video Episode 21 | Earth’s Mass Extinctions

Earth's mass extinctions were Ordovician, Devonian, Permian, Triassic & Cretaceous which killed the dinosaurs. Now we are on to the 6th one called the Holocene.