The revolutionary technology will be trailed at this year's Glastonbury Festival.
Gates has given away so much of his fortune that Amazon's Jeff Bezos supplanted him as the wealthiest.
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Your pee is more powerful than you realise.
This article is part HuffPost's Project Zero campaign, a yearlong series on neglected tropical diseases and efforts to eliminate them. Imagine that you wake some mornings to find you're so weak you ca...