This week we're going first to Africa, where we'll hear about an ingenious idea for bringing light to rural areas. Hint -- think wind-up. Also, Yahoo executives will be in Washington next week to testify before Congress on their activities in China. We'll have a podcast preview. Also, a new generation of Burmese pro-democracy activists are embracing new tools like Facebook. Finally, is it possible to go from Point A to Point B in the UK WITHOUT being filmed by a CCTV camera? We'll find out.