Another correspondent dismissed the 'hysteria' on the grounds that they can remember being terribly upset in the Seventies over an impending Ice Age, which never occured. It's fair enough to be concerned at being gyped; especially if you really took it to heart. I have some sympathy with this. But it does not change the fact that, whether for or against, the reality will trammel on. Believing that global warming is a beat-up because global cooling was does not make it so.
Rather than relaxing in front of your energy-hungry appliances and pretending the threat doesn't exist, if you are serious about the issue, you will seek an at least cursory explanation for coral bleaching. Why is the Great Barrier Reef under such threat if not global warming? If there is global warming but it's not the result of manmade CO2 emissions then what does cause it and what can we do about it? That is the only legitimate approach to the whole matter.