Beijing_Air_Pollution_Visualizations See: https://bl.ocks.org/SuYoungHong/555a263b60feeea8451af1d068c43b91 https://bl.ocks.org/SuYoungHong/ef224777175ad69300e130d423d5d08e https://bl.ocks.org/SuYoungHong/1c133ceef5fb9b4743c980c2df869d18