inventions stories

"This is a stickup, see? Now turn over all your valuables and no one needs to get hurt." Back in 1928, a line like that would have been met with chattering teeth and shaking, raised arms. In 1929, however, Chicagoan inventor Sammy Schwarz would see it answered with "a stream of lead bullets in his face."
It's a huge problem: Lots of plastic goes unrecycled. Even in places with recycling programs (like New York City), the only plastic items recycled are bottles, leaving everything else as waste. What to do with all that unrecyclable plastic? A Japanese inventor has put forward an answer: melt the stuff and turn it into oil.
The venerable computer mouse has a problem: No matter how perfect its contours may be, it still could lead to repetitive stress injuries if you use it for too long. That's why one Chicago inventor dared to reinvent the way we point and click, and his novel design is finally for sale.
The seemingly never-ending search for a 3D display without those cumbersome glasses goes on, and here's the latest: the AquaLux 3D system projects images onto numerous layers of water droplets. Researchers at Carnegie Mellon University have it tweaked up so well, you can play multileveled Tetris on it.