Archives for September 28, 2011

Why does the Earth have a liquid core?

“If you ever drop your keys into a river of molten lava, let ‘em go, because, man, they’re gone.” -Jack Handey Take a look at our home planet, Earth, and one of the things you’ll notice is that over 70% of the surface is coated in water. We all know why this is, of course:…