More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
The state of Florida is bigger than England!
74
The water of the Antarctica is so cold that nothing can rot there.
334
Every year, Alaska has about 5,000 earthquakes.
31
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
There are more than 50,000 earthquakes throughout the world every year!
47
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61