CBC: U.S. President Barack Obama is poised to nominate his "green quarterback," a longtime air quality expert who has been a champion for tougher carbon emissions standards, as head of the powerful Environmental Protection Agency.
Gina McCarthy, who currently heads the EPA's Office of Air and Radiation, reportedly has the inside track to replace Lisa Jackson, who officially stepped down from the agency last week.
The 58-year-old McCarthy's ascension proves the president is serious about battling...