A new U.S. government report says North American industries are producing more carbon than the earth can absorb.
It found that fossil fuel emissions produced on this continent account for more than 25 percent of global emissions. Even though vegetation absorbs carbon, the report says we're putting more in than the vegetation can take out. The authors of the report did not know whether this trend would continue, but they are concerned that continued warming could exacerbate drought and reduce vegetation. They say this would cause even more carbon release into the atmosphere.