A study has shown that a male zebra finch is less likely to court a female zebra finch if he did not form any social friendships with female zebra finches when younger.

Ketchup was sold in the 1830s as medicine.

The Popsicle was invented by 11 year-old Frank Epperson in 1905. He left his drink outside with a stir stick in it and he noticed that it had frozen. He applied for a patent in 1923 and named it "Epsicle." The name was later changed to Popsicle.

AMAZING FACTS