Scary Facts About Earth You Should Know

These are the top five scariest facts about our own planet Earth, and the last one

sounds like straight science fiction but is completely real. Comment below which

fact freaked you out the most. But first, like and subscribe if you love dark

Earth facts, or you’ll keep living on a horror planet without even knowing it.

First, Earth is slightly radioactive. About half of the heat inside our

planet comes from radioactive elements constantly decaying in the core and mantle.

Our warm, “safe” ground is powered partly by slow nuclear reactions deep below us.​

Next, a dead planet is buried inside Earth. Scientists think a Mars‑sized world