The media seldom reports dissenting views. The New York Times recently recognized the largely unreported debate. On February 29, it devoted almost two pages to the topic. The articles by William K. Stevens are easily the best coverage of the issue that I've seen. I'll try to summarize it, while taking the liberty of adding a few bits of information to add perspective.
Most climatologists agree that greenhouse gas levels are rising.
There is also agreement that the earth is warming. But that's just about all that's agreed. The debate seems to center on two points. The first is that climate models still don't have it right. More carbon dioxide is produced than actually ends up in the atmosphere.