Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
More than 25% of the world's forests are in Siberia.
51
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
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
Forest growth in the US has exceeded harvest since the 1940’s. Today, we have more trees than any time in the past 100 years.
14
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
Even Antarctica has an area code. It's 672.
58