One cubic mile of seawater contains about 50 pounds of gold.
79
Australia's Great Barrier Reef is 1,250 miles long!
45
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
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 average ice berg weighs 20,000,000 tons!
54