I just read this article on MacNN:

http://www.macnn.com/articles/07/10/02/betavoltaic.battery/

This totally blows my mind. They are working on batteries that will last for 30 years before being depleted. The batteries use radioisotopes, they are not radioactive, and infact aren't even hazardous, you can throw them away in regular household trash. Its amazing technology!

And think what this means for your devices! Your laptop computer. Your iPods. Your Cell phones. Your digital camera. Your remote control. All of it, it could all be powered by batteries that will essentially last forever. Batteries as we know them would be completely obsolete. I'm completely blown away by this technology, and by how close it may be!