• 2013 Nissan Leaf, Nashville area test drive, April 2013

    With more than 300,000 Nissan Leaf electric cars on the road, some more than six years old, battery degradation is becoming more and more of an issue. The different rates of capacity loss are a topic of much discussion among Leaf owners, but it now seems likely that Nissan's choice of passive air cooling rather than active liquid cooling has contributed to faster capacity loss than in GM or Tesla electric cars. Now Nissan has announced a new option for Leaf owners, one that's considerably less expensive than buying a new battery pack off the shelf for an aging Leaf. DON'T MISS: Nissan Leaf...

  • Nissan electric-car battery
    Nissan, Sumitomo open electric-car battery recycling plant in Japan

    The town of Namie, in eastern Japan, was devastated by the earthquake and tsunami of 2011, and has struggled to recover from the devastation of that day. Almost seven years later, the first new plant in town is set to open, one contributing to clean energy and zero-emission vehicles to boot...

  • Used Chevrolet Volt batteries for energy storage at GM facility in Milford, Michigan
    Reusing electric-car batteries: great idea, lots of practical challenges

    In theory, it's a wonderful concept: once their tenure in an electric car is over, lithium-ion battery packs with as much as 70 percent of their energy capacity remaining can be sold and reused. In practice, however—especially at scale—the idea turns out to have some practical...

  • Tires
    How Burning Rubber Could Help You Be Greener 

    Tirediesel? Don't laugh out loud; it could be coming to a biodiesel pump near you someday. And it could at lat be something to do with used tires. Except for sandals, playground equipment, and the like, there aren't many products that use them. In the past tires were hauled miles away from cities...

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