Even Antarctica has an area code. It's 672.
58
Australia's Great Barrier Reef is 1,250 miles long!
45
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 Niagara Falls moves upstream at an average rate of about 295ft a century!
48
More than 25% of the world's forests are in Siberia.
51
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138