"When something is free, you tend to use more of it. It's true for buffets and open bars, and it's the same with carbon," says The Atlantic while advocating for a carbon tax to slow global warming. "Today producers and consumers can burn coal and drive gas-guzzlers without fully paying for their contribution to rising carbon dioxide levels. Carbon emissions have a cost, but carbon emitters don't pay the price. Economists call this a 'market failure.' You can call it, 'a recipe for toasting the planet.' We normally talk about two ways to price carbon: a carbon tax or a cap-and-trade system...Both policies raise the price of carbon in the hopes that producers shift toward cleaner technologies and consumers use less dirty energy."