earth, giant impact hypothesis, great oxidation event, moon, permian extinction, permian mass extinction, snowball earth, theia
We all at some time or another think about life-changing catastrophes, but have you given much thought to Earth’s life-changing events? Most people have never heard of these catastrophes. 4 catastrophes that have happened to Earth 1. The Giant Impact Scientists think the Moon formed shortly after Earth around 4.5 billion years ago. A new ...
About 252 million years ago, a rise in global temperatures resulted in a massive mass extinction in Earth’s history called the Permian mass extinction. Almost 96 percent of marine animals and 70 percent of land animals perished. All this happened in just a few thousand years. Scientists warn that a similar fate might await us ...
The most severe mass extinction in Earth’s history occurred with almost no early warning signs, according to a new study by scientists at MIT, China, and elsewhere. The end-Permian mass extinction, which took place 251.9 million years ago, killed off more than 96 percent of the planet’s marine species and 70 percent of its terrestrial ...