If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
One cubic mile of seawater contains about 50 pounds of gold.
79
Every year, Alaska has about 5,000 earthquakes.
31
Forest fires move faster uphill than downhill.
52
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61