Billions of years ago, another planet smashed into Earth. An event of this epicness could have created our Moon. It also could have brought alien life to our planet. What evidence of this planet still ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...

The infamous Black Death—a pandemic that killed as many as one third to one half of Europeans within just a few years—may have been aided in its devastation by an unknown volcanic eruption. Riding ...