Australia's Great Barrier Reef is 1,250 miles long!
45
Europe is the only continent without a desert.
62
Even Antarctica has an area code. It's 672.
58
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
Every year, Alaska has about 5,000 earthquakes.
31
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
The Sahara desert expands at about 1km per month.
90