This is clearly the season for states acting together in coalitions on both sides of the country to address climate change emission. Last week the Western Climate Initiative, a coalition of northwestern states in the US and Canada, announced its proposal to achieve a 15 percent cut in greenhouse gas emissions by 2020. The New York Times described the blueprint as "the most far-reaching effort in North America to curb emissions linked to climate change." On the other side of the country, the Regional Greenhouse Gas Initiative, a coalition of 10 Northeastern states, reported the results of the nation's first auction of global warming permits