One reader sent me a curious email, "Icebergs in Lake Michigan." Indeed one photo showed a building sized chunk of ice floating in the water. Close examination of the photo revealed many layers of ice in the mass not un-like one sees in tree rings. This was a multi-year iceberg from a glacier, not seasonal ice, and certainly not from Lake Michigan. One can only guess why this misinformation is circulating on the web.
NASA Report: CO2 at 391.7 ppm as of February 2011 at Mauna Loa Observatory: pre-industrial level ~280 ppm.
"And, so it goes."
The scientific career of Raymond N. Johnson, Ph.D., spanned 30 years in research and development as an organic/analytical chemist; he is currently founder and director of the Institute of Climate Studies USA (www.ICSUSA.org). Climate Science is published the first Sunday of every month.