The Sahara desert expands at about 1km per month.
90
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
Forest fires move faster uphill than downhill.
52
The state of Florida is bigger than England!
74
There are approximately three chickens for every human on Earth.
13
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63