Watch these three videos: a) What is a Corporation? [http://www.youtube.com/watch?v=Pin8fbdGV9Y]b) Concept of Externalities [http://www.youtube.com/watch?v=aCGTD5Bn1m0&feature=related]c) Case Histories (Part 5) [http://www.youtube.com/watch?v=H3m5lq9FHDo&feature=related] **After watching the videos, GO BACK TO THE MAIN FORUM PAGE and RESPOND to AT LEAST THREE (3) topic posts, dealing with Social, Ethical and Environmental Responsibility**TOPIC: Labor PracticesTOPIC: Ownership of commonsTOPIC: Advertising to ChildrenTOPIC: Social Responsibility and AccountabilityTOPIC: Corporate Involvement in GovernmentTOPIC: Advertising and Public SpaceTOPIC: Influence of Corporations on Society