Nokia powering up self-charging phone
"I can't talk, my phone is charging ... oh, wait." (Credit: Nokia) No more telling mum you can't talk because your mobile phone is "about to die" - it soon could be charging itself as you speak. The Nokia Research Centre in Cambridge, England, is working on a prototype system that would eliminate the traditional mobile phone charger. The system collects energy from ambient radio waves emitted by antennas, TV masts, Wi-Fi transmitters and the like. This might all sound uber-scientif