Winners of 3D printers for peace contest




After implementation of the vaccination beads, their utility will decline sharply due to the Pokémon effect: “I’ll trade you three 2014 polios for your 2015 rubella!”


Cool people doing cool things. More wonderful, BB, thanks!


Solar cone water distillers have been around for awhile now. Whether they’ve been successfully marketed or deployed is another question. I wonder how different this design is from others. Any idea?

Here are some pictures of earlier solar cones:

closed #5

This topic was automatically closed after 5 days. New replies are no longer allowed.