Source: China – South China Morning PostWhen the US embassy in Beijing started tweeting figures from its rooftop air quality monitor it did not anticipate the far-reaching consequences.It started publishing hourly measurements of PM2.5 levels – the most dangerous small particles – on Twitter in March 2008 at a time when the city was choking on dense smog.The tweets eventually prompted the Chinese authorities to start releasing that data themselves after the US embassy readings started to appear on social media platforms such as Weibo…Read More