The Sahara desert expands at about 1km per month.
90
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
One cubic mile of seawater contains about 50 pounds of gold.
79
There are approximately three chickens for every human on Earth.
13
Forest fires move faster uphill than downhill.
52
It's still possible to see the division between East and West Germany due to different light bulbs.
5