Two teams of kids design and build catapults to fling a tennis ball as far as possible. Two teams of kid engineers design and build catapults to fling a tennis ball as far as possible.

In his new book Defending Your Castle, William Gurstelle shows you how to build catapults, crossbows and all the other devices you need to keep the invading hordes at bay. For this project to work ...

A dog owner has impressed the internet with a DIY solution for keeping his pup occupied. George Giavasis, who lives in Northwest Montana, created a tennis-ball catapult for his dog Olive to play fetch ...

Shannon Beck’s second grade class at Burchfield Primary School was a beehive of activity as her students prepared to launch Remake Learning Days with an actual launch. The kids were among 6,000 first ...

This article was taken from the October 2011 issue of Wired magazine. Be the first to read Wired's articles in print before they're posted online, and get your hands on loads of additional content by ...