Scientific American just released a short podcast describing Carat, a collaborative energy monitoring app for Smartphones built originally in the AMPLab (using the BDAS stack of course) and now deployed in conjunction with researchers at the University of Helsinki.    The U of H team has also published an interesting set of statistics on app battery use gleaned from the hundreds of thousands of phones running the software.

The podcast and its transcript are at:

http://www.scientificamerican.com/podcast/episode/app-ids-other-battery-eater-apps/

(listening to it on your Smartphone will hopefully not overly-drain your battery…)