For more than 15 years Zeftron Nylon's 6ix Again program has collected and recycled waste commercial carpet, turning used nylon 6 - a type of nylon that is infinitely recyclable - into brand new nylon. Richard Radke, Zeftron's marketing specialist, spoke with GreenBiz Radio about Zeftron's Cradle-to-Cradle certification and how it's 6ix Again program helps find alternate uses for unwanted carpet.