Officials celebrate major progress in battle against severe public health hazard: 'Critical episodes have fallen so much'

Officials celebrate major progress in battle against severe public health hazard: 'Critical episodes have fallen so much'

After decades of work to clean up the air, Chile's capital is finally reaping the benefits. But experts say challenges remain. Santiago has long struggled with intense pollution because of its unique geography and weather, which help to trap pollution in the city, particularly during the winter months. But a 30-year government-led effort that has encouraged greater public transportation use, limited the number of cars on the road each day, and b…