Dolphins sleep with one eye open. See more

There are only four words in the English language which end in "-dous": tremendous, horrendous, stupendous, and hazardous. See more

Hershey's Kisses are called that because the machine that makes them looks like it's kissing the conveyor belt. See more

The first owner of the Marlboro Company died of lung cancer. See more

About 70 percent of your body weight is water. See more

Winston Churchill was born in a ladies' room during a dance. See more

Shakespeare invented the words "assassination" and "bump". See more

The typical laboratory mouse runs 2.5 miles per night on its treadmill. See more

Koala bears have finger prints that are almost identical to ours. See more