The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The Atlantic Ocean is saltier than the Pacific Ocean.
54
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
Even Antarctica has an area code. It's 672.
58
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55