During 2013–2014, China launched a nationwide, real-time air quality monitoring and disclosure programme which substantially expanded public access to pollution information. This column analyses the impact of the programme and finds that it triggered a cascade of changes in household behaviour, prompting people to find out more online about pollution-related topics, adjust their day-to-day consumption to avoid exposure to pollution, and exhibit a higher willingness to pay for housing in less-polluted areas. The programme’s estimated annual health benefits far outweigh the combined costs of the programme and associated pollution-avoidance behaviours.
Panle Jia Barwick, Shanjun Li, Liguo Lin, Eric Zou, 12 February 2020
Matthew Kahn, Cong Sun, Siqi Zheng, 08 July 2015
China’s cities suffer from extremely high levels of air pollution, and Chinese consumers spend more than $US100 million on anti-smog products per year. Using recent internet sales data, this column explores how investing in such self-protection products varies for consumers with different income brackets. The urban poor are shown to be less likely to engage in this health-improving strategy. This suggests that cross-sectional income comparisons understate lifetime inequality.