Four hundred million Indians, more than the population of the United States and Canada combined, lack electricity. India's newly elected Prime Minister, Narendra Modi, is promising to bring power to those in need by 2019.
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"It is a day that all countries fought hard for, and a day when all stakeholders come together to celebrate the victory of mankind over a dreaded disease that, for centuries, has killed and disabled legions."
Black carbon is a an air pollutant that comes from burning fossil fuels and biomass. New studies have found that it is contributing much more to both local air pollution and climate change than previously thought.