It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Europe is the only continent without a desert.
62
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138