1. The Sahara desert expands at about 1km per month.

2. The North Atlantic gets 2.5 centimetres (1in) wider every year.

3. The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.

4. The percentage of Africa that is wilderness: 28%. The percentage of North America that is wilderness: 38%.

5. There are more than 50,000 earthquakes throughout the world every year!

6. The warmest temperature ever recorded on Antarctica was 3 degrees F.

7. The state with the longest coastline in the Continental U.S. is Michigan.

8. The state of Florida is bigger than England!

9. The Niagara Falls moves upstream at an average rate of about 295ft a century!

10. The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!

11. The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.

12. The city of Houston, Texas is built on a swamp and is slowly sinking!

13. The average ice berg weighs 20,000,000 tons!