Cardboard beds and sidewalks made of shells. Could this be the most su… CNN 0 101 07.27 23:55 https://www.youtube.com/watch?v=T4Wlpt-8gRY + 14 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 16 Cardboard beds and sidewalks made of shells. Could this be the most sustainable Olympic Games? #news