The Atlantic Ocean is saltier than the Pacific Ocean.
54
More than 25% of the world's forests are in Siberia.
51
Check your map! Virginia extends farther west than West Virginia.
67
Australia's Great Barrier Reef is 1,250 miles long!
45
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63