India’s air pollution problem

The last time President Barack Obama made a major state visit to Asia was last year when he met with Chinese president Xi Jinping and announced a broad-reaching climate change deal.

We shouldn’t expect the same thing from his visit to India, even though its cities have air that’s four times deadlier than in Beijing. But how does India’s environmental pollution stack up, and what might the U.S. do to curb greenhouse gas emissions there?

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