Many scientists believe that the level of carbon dioxide, as well as the earth's temperature has been steadily increasing in recent years as the result of the burning of fossil fuel. Yet many other scientists have challenged this thinking.
The world governments are pushing a massive world-wide reduction in the emission of greenhouse gases, carbon dioxide. The Cap and Trade scheme will cap the level of emissions in developed countries and trade this reduction to the developing nations resulting in a massive redistribution of wealth.
One doesn't have to be a climatologist to simply apply some critical thinking to this issue. The geologically recent ice age resulted in massive ice sheets extending to the middle of this continent, but subsequent warming long ago melted them back to the polar regions. What mechanism caused that massive reduction of ice? It was not the result of burning fossil fuels.