ANDY KESSLER: Want To Change The World? How About A Billion-Dollar Prize. “Sergey Brin is worth $23 billion and Mark Zuckerberg $13 billion. If they really want to have an impact on society—beyond the societal wealth already created by Google and Facebook—offer a billion-dollar BrinZuck prize to prevent or stop Alzheimer’s, or to regenerate spinal cords and organs, or to cure obesity. Instead of small-ball academic researchers vying for grants from the National Institutes of Health, you’d get entrepreneurs coming out of the woodwork trying innovative approaches to win a $1 billion jackpot. Or maybe the challenge could be to create personal jet packs. Or neuron downloads.”