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"In the opening chapter of his famous Lectures on Physics, Richard Feynman pondered the nature of science, the laws of physics, and the best way to teach it all. He emphasized that much of the vast accumulation of scientific knowledge could be condensed into some essential principles that allowed all sorts of sophisticated deductions."

"first glance, the bright red shipping container that sits by the side of the road in a slum outside Johannesburg doesn't look like something that could transform hundreds of lives. Two sliding doors open to reveal a small shop counter, behind which sit rows of canned food, toilet paper, cooking oil, and first-aid supplies. Solar panels on the roof power wireless Internet and a television, for the occasional soccer game. And two faucets dispense free purified drinking water to anyone who wants it."