The Sahara desert expands at about 1km per month.
90
Mexico City is built on top of an underground resevoir!
47
Australia's Great Barrier Reef is 1,250 miles long!
45
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
The state of Florida is bigger than England!
74
More than 25% of the world's forests are in Siberia.
51