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 state with the longest coastline in the Continental U.S. is Michigan.
31
The Sahara desert expands at about 1km per month.
90
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
Mexico City is built on top of an underground resevoir!
47
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
Even Antarctica has an area code. It's 672.
58