new delhi smog SAJJAD HUSSAIN/AFP/Getty Images

Tracking Air Quality the Right Way

It is difficult to get a clear picture of global air-pollution levels because much of the ground-level data is outdated and there is no authoritative source for satellite-derived data. The international community can and must build a system that regularly tracks collective progress on reducing fine particulate matter.

CHENNAI/MUNICH – Every year, the World Health Organization summarizes global progress on malaria control. It details the number of cases in affected countries, shows year-on-year changes, outlines goals, and assesses the current funding landscape. The United Nations puts out a similar annual report for HIV/AIDS. This regular tracking of serious public-health concerns is essential for addressing them effectively, because it can help channel resources to where they are most needed and identify interventions that are working.

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