The Ultimate Pizza Quiz

Mattel is perhaps best known for founder Ruth Handler's invention of the Barbie doll, but dozens of acquisitions fall under their umbrella, including Fisher-Price, Dee & Cee Toy Co., Bluebird Toys and Polly Pocket, and The Learning Company. They're responsible for many well-loved toys like Hot Wheels, the Magic 8 Ball, and American Girl.

Sandy Island, a land mass no larger than Manhattan in the Pacific Ocean, was discovered by James Cook in 1876. When a team of Australian scientists went to survey the island in 2012, they found that there was no island at all! They believe that Cook might have spotted a mass of floating volcanic stone and gas.

Jellyfish, though beautiful, can sting with their tentacles if they brush against you when you're swimming in the ocean. You can also get stung if you step on a jellyfish, even one that isn't alive anymore. Usually, jellyfish stings will hurt, and might even itch, but are not emergencies. Though some jellyfish stings can be very dangerous.