One cubic mile of seawater contains about 50 pounds of gold.
79
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
The Sahara desert expands at about 1km per month.
90
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62