The Atlantic Ocean is saltier than the Pacific Ocean.
54
Forest growth in the US has exceeded harvest since the 1940’s. Today, we have more trees than any time in the past 100 years.
14
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
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