Scientists around the world want to find out. The plastic “end-of-life challenge” calls for new ways to recycle and reuse plastics endlessly in a closed loop system, so they never become waste. Innovation on that scale would convert the current “make-take-dispose” linear economy into a circular economy, where recycling plastic for eternity is possible. One scientist has made a significant advancement. John Layman, head of material science at Procter & Gamble and chief technologist and founding inventor of PureCycle Technologies.