Beijing air quality problems famously put China's renewables and EV programs into overdrive. I don't think you needed scientific measurements to know there was

Beijing air quality problems famously put China's renewables and EV programs into overdrive. I don't think you needed scientific measurements to know there was a problem but I wonder how much the outside data helped crystallize a real engineering response rather than a coverup. "The air we breathe: lessons from Beijing’s airpocalypse" https://www.smithschool.ox.ac.uk/news/air-we-breathe-lessons-beijings-airpocalypse https://www.smithschool.ox.ac.uk/news/air-we-breathe-lessons... If this isn't just random unplugging of things and there's not a Trump aligned oligarch selling competing data (like the AccuWeather guy) it might be fossil fuel corps looking to hide the damage they do.