Houston Chronicle: When it comes to global warming, the public at large doesn’t know what to believe anymore. Global warming alarmists have been hammering at us for years; the media is made up mostly of true believers; and politicians, who, in the absence of understanding and knowledge about climate science, have put themselves out on a limb from which it is difficult to retreat. Given the economic interests and the political powers involved, this dilemma will not go away quietly. Alarmists are …