PhysOrg: Minorities and people of color have not managed to break the "green ceiling" inside environmental organizations, and remain underrepresented on their staffs, according to a report released Monday. The report found that while people of color make up about 38 percent of the U.S. population, they represent 12 percent to 15.5 percent of the staffs of environmentally focused foundations, nonprofits and government agencies. None of the largest environmental organizations has a person of color as president,...