A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
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
Every year, Alaska has about 5,000 earthquakes.
31
Forest fires move faster uphill than downhill.
52
More than 25% of the world's forests are in Siberia.
51
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56