If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
Australia's Great Barrier Reef is 1,250 miles long!
45
The water of the Antarctica is so cold that nothing can rot there.
334
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
Forest fires move faster uphill than downhill.
52
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
The Sahara desert expands at about 1km per month.
90
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18