Teju Cole's 'Blind Spot:' What's missing when we look at the world?

Nigerian-American writer Teju Cole has a new book out called “Blind Spot.” It features hundreds of images -- spanning from Lagos to Berlin to Brooklyn -- with essays on what’s visible and invisible in the photos. Many of the photos don’t include people -- just traces of them.

Teju Cole is a writer and photographer. Photo by Martin Lenemann.

Brazzaville. There are two images of this boy in
"Blind Spot" -- one with his face shadowed, and another with his face visible.

Zurich. Many images in "Blind Spot" are from Switzerland.