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
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
The average ice berg weighs 20,000,000 tons!
54
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The water of the Antarctica is so cold that nothing can rot there.
334
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The Atlantic Ocean is saltier than the Pacific Ocean.
54
Israel's Dead Sea is 1,312 feet below sea level.
48