-AP American scientist Joshua Apte travels in an autorickshaw to present alarming findings for anyone who spends time on or near the roads in this city of 25 million. The autorickshaw lurched through New Delhi's commuter-clogged streets with an American scientist and several air pollution monitors in the back seat. Car horns blared. A scrappy scooter buzzed by belching black smoke from its tailpipe. One of the monitors spiked. Joshua Apte has alarming...

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