-The Times of India NEW DELHI: Localized air pollution, posing an environmental and health challenge, has been linked to the presence of 'heat islands' in Delhi - pockets which are significantly warmer than their surroundings. A study of these localized 'hot spots', compiled after a controversy over a Delhi versus Beijing pollution scare, revealed that vehicular congestion in conjunction with highly built-up areas is creating worrying levels of pollution, affecting a significant...

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