Imagine a world so dark and crushingly cold that sunlight never reaches it, a place where the weight of the ocean above is ...

The Mesozoic Era began with the Earth’s worst-ever extinction event ... or a combination of some or all of these. An estimated 90 percent of all animal species on the Earth were wiped out.

But whales took all that effort and threw it out the window ... Latest videos Whales are the largest animals to ever exist on this Earth, outweighing even the dinosaurs. These titans roam the ...

Usain Bolt is the fastest human being in history. The great Olympian can reach a top speed of 27 mph, which is faster than a lot of animals. Follow BI Video: On Twitter More from Sports Usain Bolt ...

The modern blue whale has long been considered the largest and heaviest animal ever, beating out all the giant dinosaurs of the distant past. But Perucetus colossus – the colossal whale from ...

So, without this extinction event, we would not be here! The post The Earth’s Worst-Ever Extinction Event Wiped Out 90% of All Animal Species appeared first on A-Z Animals.