• 2 Videos, Slides, Films

• 1 Agricultural chemicals
• 1 Environmental aspects
• 1 Food supply
• 1 Green Revolution
• 1 History
• 1 Overpopulation
• 1 Pesticides
• 1 Petroleum industry and trade
• 1 Plastics

• 1 Annenberg Learner (Firm)
• 1 BBC Worldwide Ltd.
• 1 Films Media Group
• 1 Griswold, Alex
• 1 Harvard Environmental Economics Program
• 1 Harvard-Smithsonian Center for Astrophysics
• 1 Harvard-Smithsonian Center for Astrophysics. Science Media Group
• 1 Lewicke, Anna
• 1 Mcelheny, Tobias

• 1 Earth (Planet)

• 1 Environmental films
• 1 Internet videos
• 1 Video recordings for the hearing impaired

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