A simple explanation of global warming and why it is good and why the alarmists are wrong

I found a great summary of Climate Change issue on a blog response by Mike Haseler. It says the same as I do only in other words.

If you want to understand global warming here it is in a nutshell:

CO2 is a greenhouse gas. The scientific consensus is that doubling its level as is expected over the next century will cause about 1C of warming. Most people accept that 1C warming will be BENEFICIAL because CO2 is a plant food and all plants benefit from high levels of CO2 and warming is generally beneficial particularly in northern areas like Britain (why on earth do we have green houses if not to benefit from the added warmth?)

This is the science. This is what the "consensus" is about. It is about a 1C of warming which is beneficial. The big lie is that this dispute is not about the greenhouse effect of CO2. It is about the massive scaling up of this effect by untried untested theories. These theories about added warming are introduced because the CO2 greenhouse effect cannot explain all the changes we saw in the 20th century.

The alarmist side say "it must somehow be due to CO2". This is bogus science! If anyone did it in any other subject those involved would get kicked out of the subject for talking such nonsense. But not climate "science". Here they create models which are little more than taking the recent rise (1970-2000), drawing a line through the trend and projecting it forward a hundred years and proclaiming the end of the world. But as we all know this approach crashed and burnt as it stopped warming around the turn of the century.

On the sceptic side we say: "the 1970-2000 increase could be due to natural climate variation". And we know this because before the measured increase in CO2 we saw the same rise in temperature over the same three decade period from 1910 to 1940 as we saw during the period of concern (1970-2000). So if the first period was due to natural climate variation then this natural variation is more than large enough to explain the change from 1970 to 2000.

So on the one side with have bogus science being pushed by the alarmists. On the other we have people asking that we base our predictions on the real science of the CO2 greenhouse effect which suggests beneficial warming of about 1C over the next century.