An octopus in danger can squirt a stream of ink at its attacker. See more

The longest word that can be typed using only the right hand is lollipop. See more

Astronaut Neil Armstrong first stepped on the moon with his left foot. See more

Humans, bonobo monkeys, and dolphins are the only species that have sex for pleasure. See more

To "testify" was based on men in the Roman court swearing to a statement made by swearing on their testicles. See more

72% of people in Mali earn less than $1 per day. See more

The average person has over 1,460 dreams a year. See more

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

Your muscles make up about one-half of your body weight. See more