Although almost everyone in the world now breathes air that is polluted in some way, the unfolding story of air pollution is one of environmental inequality.
Dry weather in southwestern China has crippled huge hydroelectric dams, forcing cities to impose rolling blackouts and driving up the country’s use of coal.
The number of premature deaths occurring from coal-related air pollution in Delhi could almost double in the next nine years, with 5,280 premature deaths.
The Indonesian government has walked back an earlier pledge to phase out all coal-fired power plants, saying now that it will keep them running but fit them with carbon capture technology.