In China, 2013, scientists were able to grow a human tooth from scratch using stem cells taken from urine.

Ed Cox from San Francisco invented the pot scrubbing S.O.S. pads in 1917. His wife came up with the name, which stands for "Save Our Saucepans."

When blue whales are first born, they gain as much as 200 pounds a day while they are calves.

AMAZING FACTS