Leonardo DiCaprio isn't alone in believing that climate change and pollution can be stopped. A new study published in the journal Nature Climate Change estimates that the US alone could save $250 billion a year by cutting down on some emissions. The study focused on sulfur dioxide, black carbon and nitrogen oxide. Most of these are produced in the transportation and energy areas.
The EPA calls it the Clean Power Plan. Cost estimates are between $7 billion and $9 billion, but could save three times that in reducing lost work days and child asthma cases.