Trees Write Air Pollution Record In Wood

I would imagine that increased CO2 will show increased growth.

In the article on increasing CO2 levels, I wonder if they realize how incredibly stupid it sounds, to assert that humans have single handedly increased CO2 to levels last seen 800,000 years ago?

A study was quietly published a few years ago here in the Washington D.C. area about core samples drilled from large (old) trees in this area. I remember reading about it in our local paper. I will try to paraphrase what I remember. They found considerable increase in the width (growth) of the tree rings indicating increased carbon uptake in the last twenty years. Higher atmospheric CO2 levels and longer growing seasons were postulated as the reason for the increased wood growth. I have been unable to locate that study any where on-line. I believe it was sponsored by the Smithsonian Institute.

I have often wondered if climate models account for increased plant/tree growth.