…in a unanimous decision, the United States Supreme Court ruled in favor of environmental groups in an enforcement case against Duke Energy Corp. for failing to upgrade its air pollution controls when it renovated eight aging coal-fired power plants…"This is a solid win for the environment and for public health," said Earthjustice attorney Keri Powell. "For more than a generation, power companies have delayed cleaning up their dirtiest plants. The public paid the price for this delay in terms of unnecessary deaths, more hospital visits, higher asthma rates and unhealthy air."…