Chris Green, professor of economics from McGill University of Montreal, to speak on "Stabilizing Atmospheric Carbon Dioxide: What Will it Take?" on Wednesday, July 10, at the University of ÃÛÌÇÖ±²¥ at Boulder. Green's talk will begin at 3 p.m. in the Cooperative Institute for Research in Environmental Sciences auditorium, room 338. The event is free and open to the public, and is sponsored by ÃÛÌÇÖ±²¥' Center for Science and Technology Policy Research.