Mexico City is built on top of an underground resevoir!
47
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
The water of the Antarctica is so cold that nothing can rot there.
334
Every year, Alaska has about 5,000 earthquakes.
31
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40