Ethiopia should grade its vehicle policy in the air, not the showroom

As of 2026-08-17 23:40 UTC, NASA had published what researchers describe as Ethiopia's first long-term, continuous multisite PM2.5 and black-carbon baseline: 30 micrograms per cubic meter across 10 Addis Ababa sites. The country's vehicle policies should now be judged against a public exposure time series, not vehicle counts alone.