For years, the skeptics have tried to discredit global warming projections by noting that, several decades ago, scientists were just as concerned about global cooling.  Now it turns out that Sen. James Inhofe (“Global Warming is the Greatest Hoax Ever Perpetrated on the American Public”) has pressured Newsweek Magazine into highlighting this change. In fact  some scientists say, their early concerns about climate change were not unjustified – since escalating climatic instability is the hallmark of early stage global warming.