Bring up the issue of humankind's greatest inventions and be prepared for a debate. Everyone has their favorites.
To shed more light on the subject the editors at Design News weighed in on our own picks. Starting with 30 choices, ranging from ships and airplanes to paper and nails, we selected those that we believe had - or will have - the greatest impact on human history. None of the choices were easy.
So which inventions made our list? Scroll through our slideshow and find out. Today, we offer numbers 11 through 20. In a future show, we'll display our top 10.
Click the image below to start the slideshow What invention(s) would you put as the great of all time? Tell us your picks in the comments!
Senior technical editor Chuck Murray has been writing about technology for 31 years. He joined Design News in 1987, and has covered electronics, automation, fluid power, and autos.