It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
The state of Florida is bigger than England!
74
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
Mexico City is built on top of an underground resevoir!
47
The Atlantic Ocean is saltier than the Pacific Ocean.
54
