The top 50 entries in Core77’s Greener Gadgets Design Competition have been announced—and we have selected a group that have a good shot of making it to the top ten.
We loved the RITI coffee printer concept as well. It uses used coffee grounds instead of ink. Click on through to see the rest, including the Tweet-a-Watt! [Core77]
https://gizmodo.com/riti-printer-uses-old-coffee-grounds-as-ink-5144542
