A snippet:
Basic physical chemistry dictates that if you change the makeup of the atmosphere, other things will change, too. The trouble is that, whatever they say, nobody really knows what or on what scale. And they certainly don’t know enough to warn that the end times are nigh. Nevertheless, that hasn’t stopped a diverse cast of prognosticators from trying — safe in the knowledge that being a climate scientist, to paraphrase a 1970s romantic movie that Al Gore claimed he inspired, means never having to say you’re sorry.