January 27, 2013
My Plan to Save the World
Bill Gates, Wall Street Journal
We can learn a lot about improving the 21st-century world from an icon of the industrial era: the steam engine.
Harnessing steam power required many innovations, as William Rosen chronicles in the book "The Most Powerful Idea in the World." Among the most important were a new way to measure the energy output of engines and a micrometer dubbed the "Lord Chancellor" that could gauge tiny distances.
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