Claims that capping greenhouse-gas emissions and  creating a market for emissions trading – a policy prescription called  "cap-and-trade" – would reduce carbon dioxide output and with it the risk of  global warming. But it could achieve the  opposite. Here's how: By turning carbon emissions into  commodities that can be bought and sold, cap-and-trade policies could remove the  stigma from producing such emissions. In the late 1990s, Israeli ... Link