http://statenews.com As university officials shoveled dirt to make room for a tree near the Simon Power Plant located on Service Road, the act signified something more than just adding to the landscape. Administrators signed an agreement Tuesday to make MSU the newest member of the Chicago Climate Exchange to improve the natural environment on campus. The exchange program, or CCX, is the world's first and North America's only legally binding rules-based greenhouse gas emissions allowance trading system. en-us Gryphon 2.2.3b-tsn (woodward)/Foundry5 webmaster@statenews.com