I remember in the 70's when I was a kid, they were talking about an ice age that was coming.
Then it became global warming, until we started having cooler years again.
That's why they're now calling it Climate Change. The climate will always change, which is why they'll always be able to tax us on it.
IMHO it is arrogant of Governments and Scientists to come to the conclusion that this is man made. How are they to know what the climate was like here millions of years ago. How therefore can they state that today's weather is out of the ordinary.
There was a big storm in 1759 in South Western Nova Scotia (randomly Googled storm). Was that caused by man-made global warming / climate change? Did they ship over 1000 galleons full of flatulent cows that produced the extra CO2 and caused the storms?
I doubt anyone will know for sure what the real effect is during our lifetimes. In the meantime, I doubt they will stop taxing us on it.