Until this year, China had been America's -- and the world's -- number one recycling market. But China has shut its doors to plastic waste, which could result by 2030 in more than 100 million tons of trash with nowhere to go. So how did our recycling become so reliant on a country half a world away? Economics correspondent Paul Solman reports. Find more from PBS NewsHour at https://www.pbs.org/newshour Subscribe to our YouTube channel: https://bit.ly/2HfsCD6 Follow us: Facebook: http://www.pbs.org/newshour Twitter: http://www.twitter.com/newshour Instagram: http://www.instagram.com/newshour Snapchat: @pbsnews Subscribe: PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts Newsletters: https://www.pbs.org/newshour/subscribe