The Sahara desert expands at about 1km per month.
90
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
Israel's Dead Sea is 1,312 feet below sea level.
48
Forest fires move faster uphill than downhill.
52
Even Antarctica has an area code. It's 672.
58
More than 25% of the world's forests are in Siberia.
51