›Why it's so hard to recycle electric-car batteries
tech06:29Why it's so hard to recycle electric-car batteriesAn electric-car battery can weigh thousands of pounds. As more electric cars hit the road, the race is o...n to find a sustainable way to deal with these batteries once they die. One startup uses a high-tech shredding system to recycle battery waste. But it can't recover all the valuable metals from it just yet.