When indoor air pollution makes the news in western countries, it often feels like a local issue. One week it focuses on wood-burning stoves. Another it is gas cookers or the question of whether people should open their windows more often in winter.

People across the globe, especially in low-income countries, continue to use solid fuels like coal, wood and plant waste for cooking and heating. The resulting indoor air pollution exposes children to smoke and particles at key stages of brain development.

Environmental Protection Agency (EPA) administrator Lee Zeldin attacked the "dishonest" New York Times for its report on new air pollution guidelines.