Global warming comes with a massive price tag for every country around the world, but the cost of failing to act will be much greater. The longer we wait, the more painful—and expensive—the consequences of climate change will be. This report by the Natural Resources Defense Council predicts that the estimated costs of both failing to act, and acting on climate change in the United States (US). The research shows that if present trends continue, the total cost of global warming in the US will be as high as 3.6 percent of gross domestic product (GDP). Four global warming impacts alone—hurricane damage, real estate losses, energy costs, and water costs—will come with a price tag of 1.8 percent of U.S. GDP, or almost $1.9 trillion annually (at today's costs) by 2100.