Radio, Robins & Better Batteries

Bigger, better and longer lasting - this week we go in search of the battery technology that will power the future as well as consider the shortcomings of our present technologies. We also try to tune-in to our own broadcast on a radio powered by moss! Plus, the camel virus hitting humans in the Middle East, why radio can send migrating birds off course, the AstraZeneca take-over and the latest gadget from Google: a smartphone with a laser.