As U.S. EPA begins a series of three public hearings on air quality standards for smog, what will stricter smog regulations mean for cities and consumers? During today's OnPoint, David Biello, associate editor for environment and energy at Scientific American, discusses the Obama administration's proposed smog regulations. He explains how the proposed rules differ from the Bush administration's regulations. Biello also discusses the cost-benefit analyses of the stricter rules and their impact on the economy.