Climate Change by Ian Plimer, page-45

You have totally missed the point and off you have gone on a tangent!

The 40% he was speaking of was during the ice age many years ago, that has nothing to do with humans breathing it in.

He states quite clearly that "Climate change EXISTS" - so your cult remarks are futile.

He is pointing out the correlation between co2 and rising temperature.

But Not one of you climate change tree hugging cult following leftie greenies have addressed!