Global warming activists routinely claim that things are even worse than we thought. Marlo Lewis, senior fellow at the Competitive Enterprise Institute, says the science disagrees: “Real world measurements show at least 15 years of no global warming, an outcome that climate scientists did not predict and are struggling to explain. Whatever the cause, there is clearly less warming than the UN and activists like Al Gore said there would be. The big scare tactic now is to blame global warming for ‘extreme weather,’ but recent studies show there is no long-term trend in U.S. hurricanes, tornadoes, droughts, or floods.”