The Sahara desert expands at about 1km per month.
90
Check your map! Virginia extends farther west than West Virginia.
67
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
More than 25% of the world's forests are in Siberia.
51
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
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61