Innovating to zero! | Bill Gates – https://www.youtube.com/c/TED published Feb. 20 2010 – Do the math.
Bill Gates: The next outbreak? We’re not ready | TED – https://www.youtube.com/c/TED published April 3 2015
Innovating to zero! | Bill Gates – https://www.youtube.com/c/TED published Feb. 20 2010 – Do the math.
Bill Gates: The next outbreak? We’re not ready | TED – https://www.youtube.com/c/TED published April 3 2015
The Great Experiment 