Global warming alarmists have frequently attributed extreme weather incidents to manmade global warming, but an NBC Weatherplus.com meteorologist burst “Nightly News” anchor Brian Williams’s bubble May 12 when he said recent tornadoes are actually thought to be caused by cooler waters. “[I] talked to three people, casual conversation today, all of them smart saying, ‘I don't know, we must be doing something to our Earth.’ So, once and for all, what’s going on here?” Williams asked meteorologist Bill Karins in an interview about tornadoes that have ravaged parts of the southern United States. But Karins didn’t give any manmade reasons...