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Nonprofit venture capitalist BP Agrawal wins humanitarian award for rain-harvesting system, health kiosks.
Breakthroughs leading to sophisticated cancer, tuberculosis, and arthritis drugs, as well as cell imaging nanotechnology, get recognition.
Bacteriophages aren't as popular as antibiotics--but that could change, thanks to researchers.
African farmers are pulling water out of the ground with a tool called the SuperMoneyMaker, which won its inventor $100,000 for sustainability.