A child assists with cooking and sits over an open fire, leaving him exposed to the harmful consequences of toxic smoke inhalation in OR Tambo District, South Africa in April 2012. The World Health Organization estimates that household air pollution kills about 4 million people each year, many of them women and children, through ailments such as heart and lung disease and cancer.

First published in the October 22, 2019, 7:52 p.m. edition

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