Labs in England are developing machines that can essentially replicate themselves by building their own spare parts as an insurance against future mishaps, reports the New Scientist. "It could be a revolutionary age. MakerBot is one of a range of desktop manufacturing plants being developed by researchers and hobbyists around the world. Their goal is to create a machine that is able to fix itself and, ultimately, to replicate," writes Tom Simonite. "These machines can build any number of things, including everything from coat hooks to ipod docking stations. One MakerBot owner even made his engagement ring with it. But key to MakerBot's popularity is its ability to make its own spares."