More than 25% of the world's forests are in Siberia.
51
Mexico City is built on top of an underground resevoir!
47
The average ice berg weighs 20,000,000 tons!
54
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
The water of the Antarctica is so cold that nothing can rot there.
334