Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Every year, Alaska has about 5,000 earthquakes.
31
The Sahara desert expands at about 1km per month.
90
Forest fires move faster uphill than downhill.
52
There are more than 50,000 earthquakes throughout the world every year!
47
Even Antarctica has an area code. It's 672.
58