If you've got an old mammoth of a PC tower sitting around, don't throw it out. You can recycle it for free, and in some cases ...

Call2Recycle is a battery-focused recycling program. The organization offers drop-off options at Home Depot, Lowe's and Staples, and shipment boxes for batteries and cell phones. Drop-offs are free ...

A particularly common use is in laptop batteries ... idea over whether the battery is still usable, as well as whether the cells are worth harvesting for those in the recycling business.

According to an article published by InterestingEngineering.com, some of the processes currently used to recycle old ...