Apparently, "global warming" sounds more negative than "climate change", that is why the George W. Bush administration pushed the concept of "climate change", to sound more neutral. I personally think "global cooling" sounds much worse, though. Indeed, we are experiencing extremes, incredibly hot seasons and freezing cold wind storms. As we are now approaching Xmas (sorry for the underscore, Blogger lives its own life now), thinks got quite chilly all of the sudden. So yes, this phonomenon suggest there is no global warming.
I however resonate with the fact, that temperature extremes as they are deviating from the norm now, are a serious problem. A problem not directly for us, yet. We still have heating systems and air-conditioning. But a problem to the ecosystems on which we so directly depend on - on the breeding season of birds and mammals, the dissolving of the bottom of the food chain due to the acidification of sea waters, the hunger and frustration in developing countries that will come back to us just like a boomerang.
But to come back to the core of the problem (the above are mere consequences of the changing climate): so many from Al Gore, through Prof. Stern, Jim Hansen and Bill McKibben and Pachauri have said it: It is not the tempreature deviations in themselves that are the root of the problem, but the increasing number of CO2 equivalent particles per million (ppm) in our atmosphere that is the driving force behind the tamperatue shift. And whereas in the past CO2 ppm has been fluctuating, never to the extent as it is now. And another thing, whereas in the past tempereture change was the driver of CO2 ppm increase, now it is the other way around: even if we stop emitting now, CO2 ppm will stay in the atmospthere and drive temperature up (and down). And nature will not come to check in with the weather man every morning what kind of weather we would like on a given day: what scientists provide us now with are estimates. We cannot know the exact change. And thus we cannot prepare for its consequences.
Now that is a real loud alarm, a call for action. If somedoby tells you that they still do not believe in climate change, please refer them to one of the many websites:
http://www.occ.gov.uk/activities/stern.htm
www.unfccc.org
www.350.org
http://www.ehow.com/how_2155972_convince-global-warming-skeptic.html