Math In the Modern World via Richard Elwes

"Chaotic Fishponds and Mirror Universes" is the new volume from perhaps my favorite, little-known-in-the-US-but-altogether-worthwhile-knowing-about math popularizer, Richard Elwes. He hails from Britain, and unfortunately his books often don't achieve wide distribution or publicity over here.
Read about the new volume here (I haven't read it yet myself):

http://richardelwes.co.uk/2013/05/03/chaotic-fishponds-and-mirror-universes/

Richard's personal webpage is here:

http://richardelwes.co.uk/

And the rest of his works, through Amazon listed here:

http://tinyurl.com/co6x678

Or you can sample some of his writing at plus.maths.org here:

http://plus.maths.org/content/list-by-author/Richard%20Elwes

Richard would easily make it onto my list of 5 favorite current math popularizers (maybe even top three!)... check him out.