Kathmandu— Beijing has made significant strides in improving air quality, transitioning from 58 heavily polluted days in 2013 to just one in 2025 and achieving a nearly 70% reduction in PM2.5 concentrations—a key indicator of air pollution—over the same period; this progress is largely attributed to the city’s comprehensive system integrating environmental monitoring, scientific analysis, […]

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environment and climate
scientific discovery or breakthrough
standard news report