Have you ever noticed how blue Earth looks in photographs taken from space? This is because of our oceans. Earth is the only planet in our solar system with water on its surface--more than 200 quadrillion tons of water--and it's constantly in motion. You don't have...
Have you ever noticed how blue Earth looks in photographs taken from space? This is because of our oceans. Earth is the only planet in our Solar System with water on its surfacemore than 1.5 quintillion tons of waterand it's constantly in motion. You don't have to live near the...