Another telling bit of evidence is outlined in this newspaper narrative: http://azstarnet.com/news/science/plants-will-be-hard-put-to-handle-global-warming-gas/article_e106b776-6d2c-551d-ae01-65f0feda0485.html
Another telling bit of evidence is outlined in this newspaper narrative: http://azstarnet.com/news/science/plants-will-be-hard-put-to-handle-global-warming-gas/article_e106b776-6d2c-551d-ae01-65f0feda0485.html