The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
The state with the longest coastline in the Continental U.S. is Michigan.
31
The Atlantic Ocean is saltier than the Pacific Ocean.
54
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
The water of the Antarctica is so cold that nothing can rot there.
334
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59