Many have been led to believe that the science is settled about man-made global warming. But according to the Senate Environment and Public Works Committee, there has been a string of notable defections from the global warming bandwagon. Claude Allegre is a geophysicist and French socialist who now says that cause of climate change is unknown, and that the issue has become a very lucrative business for some people. One of Israel’s top astrophysicists, Nir Shaviv, says solar activity can explain a large part of recent warming. But perhaps no message was stronger than that of Czech president Vaclav Klaus who called fears of catastrophic man-made warming a “myth,” and said that political correctness strangles the voices of others who would speak out.