You can tell the age of a whale by looking at the wax plug in its ear. This plug in the ear has a pattern of layers when cut lengthwise that scientists can count to estimate the age of the whale.

Smiling releases endorphins in the body, which makes people feel better.

Interstate 90 is the longest U.S. Interstate Highway with over 3,000 miles from Seattle, WA to Boston, MA.

AMAZING FACTS