Global warming no longer Americans’ top environmental concern, poll finds Climate change no longer ranks first on the list of what Americans see as the world’s biggest environmental problem, according to a new Washington Post-Stanford University poll. Just 18 percent of those polled name it as their top environmental concern. That compares with 33 percent who said so in 2007, amid publicity about a major U.N. climate report and Al Gore’s Oscar-winning documentary ... [News Source]