More than 25% of the world's forests are in Siberia.
51
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Every year, Alaska has about 5,000 earthquakes.
31
Even Antarctica has an area code. It's 672.
58
The water of the Antarctica is so cold that nothing can rot there.
334
Forest fires move faster uphill than downhill.
52
One cubic mile of seawater contains about 50 pounds of gold.
79
The Sahara desert expands at about 1km per month.
90