Readers will know I am skeptical about the value of big data in future operations in mega-cities, so it was interesting to read this civilian project's use of mobile phone data in the Yemen to assess the impact of he Arab Spring.

There is a podcast on I-Tunes, behind a registration "wall".

Backed by highlights in an article:http://fivethirtyeight.com/features/...i-cell-phones/

A fuller article is in Foreign Policy, behind a registration "wall":https://www.foreignaffairs.com/artic.../yemen-calling