Bloomberg: U.S. labor and environmental groups are cooperating on a campaign calling for more government investment in renewable energy that they say will create thousands of new manufacturing jobs. The United States could add more than 820,000 new "green-collar" jobs, building wind turbines, solar-power equipment and other clean-energy products, the groups said. The 850,000-member United Steelworkers Union, the Sierra Club and the Natural Resources Defense Council have …