Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
The average ice berg weighs 20,000,000 tons!
54
Check your map! Virginia extends farther west than West Virginia.
67
There are more than 50,000 earthquakes throughout the world every year!
47
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
In 1850, only 8% of the people in California were women.
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