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
There are approximately three chickens for every human on Earth.
13
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
More than 25% of the world's forests are in Siberia.
51
The Atlantic Ocean is saltier than the Pacific Ocean.
54
The Sahara desert expands at about 1km per month.
90