Naomi Oreskes is a professor of the history of science and an affiliated professor of Earth and planetary sciences at Harvard University. Her 2004 essay The Scientific Consensus on Climate Change was cited by Al Gore in An Inconvenient Truth and led to op-ed pieces and Congressional testimony. She is the co-author of Merchants of Doubt: How a Handful of Scientists Obscured the Truth on Issues from Tobacco Smoke to Global Warming.