To match feature PITTSBURGH-GREEN/

 
To match feature PITTSBURGH-GREEN/
Plextronics device technician Jared Schillinger works in one of Plextronics' labs, testing ink that is used to coat solar panels, in Pittsburgh September 16, 2009. The lights in the lab are yellow because the inks are sensitive to blue light. Climate change and tackling high unemployment are other issues on the G20 agenda, tying into Obama's vision for a green economy and why Pittsburgh is hosting the summit. But hopes for millions of new green jobs in the U.S. economy may prove more ambitious than many advocates and investors dream of. Photo taken on September 16, 2009. To match feature PITTSBURGH-GREEN/ REUTERS/Jason Cohn (UNITED STATES BUSINESS ENVIRONMENT)