wireless

French researchers said on Wednesday they had invented a hydrogen fuel cell as a backup power source for mobile phones, thus easing dependence on an electricity supply to charge the gadget.

Negative aspects of wireless technology.

Here's how to go green with your mobile phone without putting in a whole lot of effort.

Some European towns and schools are restricting WiFi services until health studies are done, while national agencies are calling for the research. The U.S. is taking a more cavalier attitude. What does it all mean?