The bark of the redwood tree is fireproof.
The speed of light - 299 million meters a second - would still take about 26 billion years to reach one end of the visible universe to the other.
In your lifetime, you'll shed over 40 pounds of skin.
In 10 minutes, a hurricane releases more energy than all the worlds nuclear weapons combined.
The Hudson River along the island of Manhattan flows in either direction depending on the tide.
The Vicksburg National Cemetery is the second oldest in the country.
The smallest 'country' in the world to have its own top-level domain name is Norfolk Island, off the coast of Australia.
Kangaroos can't walk backwards.
An average adult body contains around 250g (1/2lb) of salt.
The largest meteorite crater in the world is in Winslow, Arizona. It is 4,150 feet across and 150 feet deep.