The Sahara desert expands at about 1km per month.
90
Every year, Alaska has about 5,000 earthquakes.
31
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Mexico City is built on top of an underground resevoir!
47
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55