The Amazon rainforest produces more than 20% the world's oxygen supply.
182
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The state of Florida is bigger than England!
74
Even Antarctica has an area code. It's 672.
58
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40