YT: Shawn Frayne, winner of a 2007 Breakthrough Award from Popular Mechanics, demos another one of his inventions: a self-sealing valve used on a solar disinfection bag
posted by dgandhi 1 decade 5 years 10 months 1 week ago • 5,403 viewsWhat's currently happening in our world?
Created: 1 decade 7 years 3 months 1 week ago
Updated: 5 years 2 months 1 week ago
Views: 13,121
Updated: 5 years 2 months 1 week ago
Views: 13,121
Our world's (d)evolution in action.