More than 25% of the world's forests are in Siberia.
51
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
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
Mexico City is built on top of an underground resevoir!
47
Check your map! Virginia extends farther west than West Virginia.
67
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86