The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
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
The Sahara desert expands at about 1km per month.
90
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
The average ice berg weighs 20,000,000 tons!
54