The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
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 Niagara Falls moves upstream at an average rate of about 295ft a century!
48
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
There are more than 50,000 earthquakes throughout the world every year!
47
In 1850, only 8% of the people in California were women.
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