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 6 years 4 weeks ago • 5,403 views
What's currently happening in our world?
Created: 1 decade 7 years 6 months ago
Updated: 5 years 5 months ago
Views: 13,121
Updated: 5 years 5 months ago
Views: 13,121
Our world's (d)evolution in action.
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1 decade 6 years 4 weeks ago • 5,403 views