• 161 Videos, Slides, Films

• 148 Biotic communities
• 84 Biodiversity
• 81 Ecology
• 67 Ecological zones
• 25 Biology
• 25 Life sciences
• 22 Geography
• 18 Earth sciences
• 17 Population
• 15 Human ecology
• 13 Geology
• 12 Natural resources
• 12 Water use
• 10 Environmental degradation
• 10 Environmental quality
• 10 Landforms
• 10 Physical geography
• 9 Endangered ecosystems
• 9 Endangered species
• 8 Physical geology
• 7 Human beings--Effect of environment on
• 6 Sociology
• 5 Earth (Planet)

• 161 Infobase
• 25 Media Policy Center (Firm)
• 22 PBS (Firm)
• 20 BBC (Firm)
• 15 TV Only SAS (Firm)
• 12 BBC Worldwide Learning (Firm)
• 12 Green Planet Films (Firm)
• 9 Camille S. DeBose (Firm)
• 4 Mirror/Mirror Productions, Inc. (Firm)
• 4 Video Education America (VEA) (Firm)
• 3 Classroom Productions. Inc (Firm)
• 3 National Geographic Digital Media (Firm)
• 2 A&E Networks (Firm)
• 2 Cerebellum Corporation (Firm)
• 2 Filmhub (Firm)
• 2 Green Interview (Firm)
• 2 Kwanza (Firm)
• 2 Off the Fence Productions
• 2 Pumpkin TV (Firm)
• 1 ABC NEWS (Firm)
• 1 ARTE France (Firm)
• 1 Australian Broadcasting Corporation (Firm)
• 1 BayView Entertainment LLC. (Firm)
• 1 CINEFETE (Firm)

• 4 North America
• 1 Asia
• 1 Central America
• 1 South America

• 161 Internet videos
• 126 Video recordings for the hearing impaired

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