Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
In 1850, only 8% of the people in California were women.
0
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
The water of the Antarctica is so cold that nothing can rot there.
334
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Australia's Great Barrier Reef is 1,250 miles long!
45
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