I read about global warming in book about the solar system from the 70s - I don't think Al Gore invented it!
the predicted rate of change is about 50 times faster than the warming which brought an end to the last major ice age which, up to that point, was itself the largest sustained natural change in climate for the past 100 000 years
Doesn't seem too "normal" for me, if we look at the last 100,000 years anyway...
Whether carbon credits is a good idea or not, it doesn't stop the fact that the world is warming up. I'm going to try and do my bit anyway (insulate my house, not make unnecessary journeys in my car, recycle stuff), even if you can't be bothered 😉