Submitted by System Admin on Wed, 12/28/2011 - 4:05pm Loading Video... How materials cycle from natural resource to trash. Details Duration: 21 min 18 secPBCore Genres: Advocacy & Activism Environment SustainabilityPBCore FCC Ratings: Parental Guidance Suggested - TV-14/ PG-13PBCore Languages: EnglishFormat: MPEG2 - MP4
