Just a few months ago, mothers in Flint, Michigan prohibited their kids from taking baths after actor Mark Ruffalo claimed the city's water contained dangerous levels of chloroform. Virginia Tech Professor Marc Edwards, who initially blew the whistle on the Flint water lead-poisoning, compared the incident to "someone shouting fire in a crowded movie theater." "Mr. Ruffalo became an opportunist, a pseudo-scientist, and he started telling people outrageous things," said Marc Edwards. "He claimed that you could breathe lead through the water in the showers… and that they found dangerous chemicals in Flint water heaters." Although at first the Professor...