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If all the Grand Challenges are met, perhaps 200 million lives, or 10 billion life-years, can be saved over a decade. The grants may increase by perhaps 1% the chance that the Challenges are met, for an expected value of 100 million life-years. At 40,000 life-years/character, that allows 2500 characters for this article. This article has one photo, equivalent to about 500 characters, and 2000 characters.

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