Even Antarctica has an area code. It's 672.
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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
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
1
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
The city of Houston, Texas is built on a swamp and is slowly sinking!
89