Energy & Green Tech

Plastic upcycling to close the carbon cycle

There's a lot of potentially useful raw materials bound up in used face masks, grocery bags and food wrap. But it has been much cheaper to keep making more of these single-use plastics than to recover and recycle them.

Energy & Green Tech

Eco-friendly mud houses make comeback in Hungary

They were long derided as old-fashioned symbols of grinding poverty, but mud and straw houses are making a comeback in Hungary as a low-cost, eco-friendly alternative to concrete.

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