Christian Science Monitor: It’s crunch time for climate change legislation on Capitol Hill, and the bill to be introduced Monday could be the last chance for passage before lawmakers face voters this fall. The bill coauthored by Sens. John Kerry (D) of Massachusetts, Lindsey Graham (R) of South Carolina, and Joseph Lieberman (I) of Connecticut has as its main goal a 17 percent reduction in US greenhouse gas emissions (mainly carbon dioxide) from 2005 levels in 10 years and 80 percent by 2050. It has …