Global warming?
The words “global warming” provoke a sharp retort from Colorado State University meteorology professor emeritus William Gray: “It’s a big scam.” And the name of climate researcher Kevin Trenberth elicits a sputtered “opportunist.” At the National Center for Atmospheric Research, where Trenberth works, Gray’s name prompts dismay. “Bill Gray is completely unreasonable,” Trenberth says. “He…