The only possible computer-based global warming explanation that matches the data is that it's caused by human greenhouse emissions, says a new study from a Scripps Institute scientist.

"The models got it right. If a politician stands up and says the uncertainty is too great to believe these models, that is no longer tenable," proclaims Dr. Tim Barnett.

Which makes it sound like he has an axe to grind rather than impartial information to impart. But, scientists are human too.

As the study has not been peer-reviewed yet, Gnomon prefers to reserve judgement regarding the cause of global warming till then.

If it holds up, we would also like someone to explain how much is caused by human action and how much by natural climate change (which is plainly happening). Because Dr. Barnett's study really only tells us that naturally-caused global warming models do not match the facts as well, not that they don't match at all.

In other words, would the Earth have heated up anyway, but we just made it worse?