The Amazon rainforest produces more than 20% the world's oxygen supply.
182
The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
1
One cubic mile of seawater contains about 50 pounds of gold.
79
The Sahara desert expands at about 1km per month.
90
Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
112
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
The Caspian Sea is also classed as the world's largest lake.
52