China’s smog has gotten so bad, it’s almost impossible to see skyscrapers from the air | International News Live Blog

https://internationalnewsliveblog.wordpress.com/2017/01/04/chinas-smog-has-gotten-so-bad-its-almost-impossible-to-see-skyscrapers-from-the-air/

As of Wednesday, Beijing was under an "red alert" for smog — the highest of four levels — and a "yellow alert" for fog. http://internationalnewslive.com/chinas-smog-has-gotten-so-bad-its-almost-impossible-to-see-skyscrapers-from-the-air/