Exclusive: Fitbit Charge and Charge HR Images and Full Features List

After earlier reports that Fitbit may be working on two new activity trackers, a tipster has sent us what appears to be official marketing materials that give us our first clear look at both the Fitbit Charge and Charge HD. Not only do we have a full feature rundown for each of these trackers, but the cleanest look… » 10/14/14 2:38pm 10/14/14 2:38pm

Betavoltaic Battery Could Power Your Laptop for Thirty Years

Research funded by the US Air Force Research Laboratory has come up with a breakthrough battery: a betavoltaic power cell that lasts for 30 years without a recharge. Made from radioactive material (I am writing this from my underground bunker) the batteries end their life being completely inert and non-toxic, so… » 10/02/07 8:15am 10/02/07 8:15am