It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
Forest fires move faster uphill than downhill.
52
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
More than 25% of the world's forests are in Siberia.
51
The Sahara desert expands at about 1km per month.
90
Israel's Dead Sea is 1,312 feet below sea level.
48