The history of chlorofluorocarbons (CFCs), their danger to the ozone layer, and the drive to replace them reminds me of an observation from former CBS news correspondent and commentator Eric Sevareid: "[T]he real cause of problems is solutions." When chemists F. Sherwood Roland and Mario Molina asked where chlorofluorocarbons (CFCs) go after leaking from refrigerators and air conditioners or being intentionally released from aerosol cans, they did not know that the answer would lead to the world-shaking discovery that these chemicals were threatening…