Mexico City is built on top of an underground resevoir!
47
Check your map! Virginia extends farther west than West Virginia.
67
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
The water of the Antarctica is so cold that nothing can rot there.
334
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Every year, Alaska has about 5,000 earthquakes.
31