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Mexico City's Delgado discusses city's efforts to reduce emissions

As one of the world's most polluted cities, Mexico City has made strong commitments to reduce emissions and become more efficient. During today's OnPoint, Mexico City's environment minister, Martha Delgado, discusses her city's climate action plan and explains what Mexico's greatest climate change-related vulnerabilities are. Delgado explains how a new international climate plan will affect her city's emissions reduction efforts. She also gives her take on what role the United States should play at the upcoming Copenhagen meeting.