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 longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
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
The Caspian Sea is also classed as the world's largest lake.
52
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
Check your map! Virginia extends farther west than West Virginia.
67
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109