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
Israel's Dead Sea is 1,312 feet below sea level.
48
Australia's Great Barrier Reef is 1,250 miles long!
45
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
The Atlantic Ocean is saltier than the Pacific Ocean.
54
Europe is the only continent without a desert.
62
Mexico City is built on top of an underground resevoir!
47