Look out No. 5. That’s right, the nonprofit Recycling Partnership is talking to you polypropylene, aka No. 5 plastic. Turn over a yogurt container or butter tub and you’re likely to see the No. 5 mark ...

Polypropylene is one of the most widely used plastics in packaging. But difficulties with recycling are potentially putting its acceptance at risk. At least that's the view of one of the leaders of ...

Nashville, Tenn. — Recycling of polypropylene packaging like yogurt cups and margarine containers faces some sizable challenges, but a new industry group is launching with the ambitious goal of trying ...

Chemists have developed a catalytic process that turns the largest component of today's plastic waste stream, polyolefin plastic bags and bottles, into gases -- propylene and isobutylene -- that are ...