Free Community Screening: September 16, “Merchants of Doubt” at Martin Luther King Jr. Library

Adversaries for hire. Robert Kenner’s 2014 documentary enters the world of scientific gunslingers, experts paid by corporations to publicly contest research findings that may hurt their bottom line. This world, Merchants of Doubt posits, is one in which global warming, DDT, acid rain, tobacco, ozone, and asbestos remain controversial at the benefit of big business and the mouthpieces they hire — and the expense of scientific communities overwhelmingly adamant about the need for regulatory action.