About half of the world’s PET plastic—which is used to make plastic water bottles and containers—winds up in landfills. Someday soon, a good amount could end up in LEGO sets instead. The LEGO Group, which has vowed to make all LEGO bricks from sustainable sources by 2030, spent the past three years testing 250 variations of recycled PET materials and in June finally unveiled its prototype for a recycled PET brick that is nearly identical to the usual brick. That milestone achieved, the Danish toy giant hopes to integrate the recycled blocks into LEGO sets in the next 18 to 24 months. The impact could be considerable: the company uses some 100,000 metric tons of plastic resin in its products each year. —Rebecca Katzman
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