Green Batteries?

Check this out for interesting tech news--researchers at Uppsala University in Sweden have developed a battery made from salt and paper:

http://ecotechdaily.com/2009/09/15/ultra-fast-flexible-battery-made-from-salt-and-paper/

If developed, this could be a significant green tech advancement. In the meantime, you can recycle dead batteries at a variety of locations, including many public libraries (in Chicago at least--check your local library) and office stores such as Staples (rechargeable batteries + cell phones, office tech, etc.): http://www.staples.com/sbd/content/about/soul/recycling.html