“Dolphins make clicking sounds that bounce off things like rocks or fish and come back as echoes, and from those echoes they can figure out where an object is plus its size and shape. This is called echolocation, and it's basically built-in sonar.”

Reference: National Geographic Kids

What is the world's largest fish?

The harmless whale shark holds the title of largest fish, with the record being a 59 footer captured in Thailand in 1919.

In Baltimore, Maryland, it is not legal to take a lion to the movies.

According to the U.S. Energy Information Administration, electricity consumption will increase by 51 percent from 2002 to 2025.