It's still possible to see the division between East and West Germany due to different light bulbs.
5
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
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
In 1850, only 8% of the people in California were women.
0
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
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
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59