Tuesday, June 23 will be a deadline of sorts for those who would like to be heard raising their voices to oppose carbon pollution. (A form is available at the end of this posting for those who wish to respond or comment.)

On April 2, 2007, the U.S. Supreme Court ruled that six gases—carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride—were pollutants and that the Environmental Protection Agency (EPA) should regulate them if it found they harmed public health and welfare. The EPA, in turn, released a finding this April that greenhouse gases and other forms of carbon pollution are a danger to America’s health and welfare.