Every year, Alaska has about 5,000 earthquakes.
31
The state with the longest coastline in the Continental U.S. is Michigan.
31
Forest growth in the US has exceeded harvest since the 1940’s. Today, we have more trees than any time in the past 100 years.
14
More than 25% of the world's forests are in Siberia.
51
It's still possible to see the division between East and West Germany due to different light bulbs.
5
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63