Astrophysicist Neil deGrasse Tyson believes in the power of science -- so much so that he gets hate mail for it. From children. As director of the Hayden Planetarium at the American Museum of Natural History, Tyson made the controversial decision to remove references to Pluto as the ninth planet in the museum's exhibits. To the chagrin of fifth graders everywhere, My Very Excellent Mother would no longer be Serving Up Nine Pizzas. "When you conduct science, it is the natural world that is the ultimate decider in what is true and what is not," he says.
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