According to China.org, the smog was especially heavy on January 22 and 23. These photos show Beijing on the morning of the 22nd. Smog is slimy, double-crossing, and no-good. It's also beautiful.
You can contact Brian Ashcraft, the author of this post, at firstname.lastname@example.org. You can also find him on Twitter, Facebook, and lurking around our #tips page.