May 01, 2015 by Kirstin Linnenkoper Global: NASA has selected Tethers Unlimited for a partner in its Small Business Innovation Research Program, which will see the latter develop a ‘Positrusion’ recycling system for the International Space Station (ISS). Tethers Unlimited’s patent-pending system will effectively convert plastic waste into high-quality 3D printer filament for use in … Continue reading Plastics in space: the recycling chapter