The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The state of Florida is bigger than England!
74
The Sahara desert expands at about 1km per month.
90
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56