Probably the biggest social issue facing the world today is the food shortage. All around the world there are people that are hungry, many of whom end up dying because of the lack of food. One organization, the FarmBot Foundation is looking to solve this, with an open source 3D printer-like machine called the FarmBot. It is a machine that is capable of undertaking basically any farm/gardening job. It is completely scalable and runs on open source hardware and open source software. Read more about this incredible project at:


http://3dprint.com/12325/farmbot-3d-farming-printer/