Cardboard beds and sidewalks made of shells. Could this be the most su… CNN 0 109 07.27 23:55 https://www.youtube.com/watch?v=T4Wlpt-8gRY + 16 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 17 Cardboard beds and sidewalks made of shells. Could this be the most sustainable Olympic Games? #news