When global warming skeptics were looking for some weight behind their argument, they often turned to physicist Richard Muller of the University of California, Berkeley, another denier. The Charles Koch Foundation, whose founder is a major funder of skeptic groups and the tea party, went as far as helping to bankroll a $600,000 study to back up their claims. But it backfired.
Muller now says mainstream climate scientists are right—the Earth's temperatures are indeed rising rapidly. Muller found that the land is 1.6 degrees warmer than in the 1950s. He went even further back, studying readings from Ben Franklin and Thomas Jefferson, and found a continually warming world.
Muller's research is being unveiled today in four separate papers at a conference in Santa Fe, N.M., which is expected to include many prominent skeptics as well as mainstream scientists.