Forest fires move faster uphill than downhill.
52
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
The Sahara desert expands at about 1km per month.
90
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59