Desktop 3D printing is still in its infancy, meaning that this young industry has a chance to start things right.  Learning from the negative effects of our manufacturing forefathers, we can get 3D printing off the ground with sustainable materials that neither deplete our limited natural resources nor pollute our surrounding ecosystem, crucial to our survival.  With that in mind, numerous organizations, Makers, and startups are finding ways to combine recycling with desktop fabrication so that we can simultaneously reduce pollution and dependency on unsustainable materials.  The latest to come out of the concrete jungle are TerraCycle and 3DBrooklyn who have announced the development of 3D printing filament made from recycled chip and snack bags.