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
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1 decade 6 years 1 month 2 weeks ago • 5,403 views
What's currently happening in our world?
Created: 1 decade 7 years 6 months 3 weeks ago
Updated: 5 years 5 months 3 weeks ago
Views: 13,122
Updated: 5 years 5 months 3 weeks ago
Views: 13,122
Our world's (d)evolution in action.
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1 decade 6 years 1 month 2 weeks ago • 5,403 views