A rather shocking event happened Wednesday: the American Physical Society, an organization representing nearly 50,000 physicists, opened for debate "the IPCC conclusion that anthropogenic CO2 emissions are very probably likely to be primarily responsible for the global warming that has occurred since the Industrial Revolution."
This is significant because on November 18, 2007, the organization declared:
Emissions of greenhouse gases from human activities are changing the atmosphere in ways that affect the Earth's climate. Greenhouse gases include carbon dioxide as well as methane, nitrous oxide and other gases. They are emitted from fossil fuel combustion and a range of industrial and agricultural processes.
The evidence is incontrovertible: Global warming is occurring.
Now, almost exactly eight months later, the following was posted at the APS website (emphasis added):
With this issue of Physics & Society, we kick off a debate concerning one of the main conclusions of the International Panel on Climate Change (IPCC), the UN body which, together with Al Gore, recently won the Nobel Prize for its work concerning climate change research. There is a considerable presence within the scientific community of people who do not agree with the IPCC conclusion that anthropogenic CO2 emissions are very probably likely to be primarily responsible for the global warming that has occurred since the Industrial Revolution. Since the correctness or fallacy of that conclusion has immense implications for public policy and for the future of the biosphere, we thought it appropriate to present a debate within the pages of P&S concerning that conclusion. This editor (JJM) invited several people to contribute articles that were either pro or con. Christopher Monckton responded with this issue's article that argues against the correctness of the IPCC conclusion, and a pair from Cal Poly San Luis Obispo, David Hafemeister and Peter Schwartz, responded with this issue's article in favor of the IPCC conclusion. We, the editors of P&S, invite reasoned rebuttals from the authors as well as further contributions from the physics community. Please contact me (email@example.com) if you wish to jump into this fray with comments or articles that are scientific in nature. However, we will not publish articles that are political or polemical in nature. Stick to the science! (JJM)
For those unfamiliar:
The American Physical Society was founded on May 20, 1899, when 36 physicists gathered at Columbia University for that purpose. They proclaimed the mission of the new Society to be "to advance and diffuse the knowledge of physics", and in one way or another the APS has been at that task ever since. In the early years, virtually the sole activity of the APS was to hold scientific meetings, initially four per year. In 1913, the APS took over the operation of the Physical Review, which had been founded in 1893 at Cornell, and journal publication became its second major activity. Physical Review was followed by Reviews of Modern Physics in 1929, and by Physical Review Letters in 1958. Over the years, Physical Review has subdivided into five separate sections as the fields of physics have proliferated and the number of submissions grew.
I'm sure the mainstream media will be all over this rather startling announcement and the ensuing debate.