Last October, top executives from some of the world’s most powerful oil companies testified before the House Oversight Committee about their industry’s climate change disinformation campaigns. For the past 30 years, Big Oil has spent hundreds of millions of dollars on advertising, political campaigns, super PACs and a network of think tanks. Using tactics from the tobacco industry, they have manufactured doubt about climate science and environmental regulation. At the hearing, the executives deflected, touting their support of clean energy while denying their role in misleading the public about the cause of climate change: the use of their products.