The Stories Behind 20 Inventions That Changed the World

(via Mental Floss) You might find it impossible to imagine a world without your smartphone, or have trouble remembering a time when Wi-Fi wasn’t everywhere, but many of today’s most relied-upon technologies would not have been possible—or even dreamed of—if it weren’t for the game-changing inventions that came before them. And while it’s easy to take many of the marvels of design and engineering we interact with on a daily basis for granted—think toilets, seat belts, and suspension bridges—it’s just as easy to overlook how a handful of more surprising inventions, like the Super Soaker or the pizza saver, have affected the world around us. From blood banks to barcodes and beyond, here are the stories behind 20 inventions that changed the world.