• 83 Videos, Slides, Films

• 55 Water use
• 43 Land use
• 43 Water-supply
• 28 Power resources
• 14 Earth sciences
• 13 Geography
• 13 Landforms
• 13 Physical geography
• 12 Biotic communities
• 12 Ecological regions
• 11 Ecological zones
• 10 Geology
• 9 Physical geology
• 9 Technical education
• 8 Agricultural education
• 6 Agronomy
• 6 Engineering
• 5 Air
• 5 Climatic changes
• 5 Economics
• 5 Global warming
• 5 Pollution
• 4 Agricultural implements

• 83 Films Media Group
• 12 Green Planet Films (Firm)
• 10 Camille S. DeBose (Firm)
• 10 PBS (Firm)
• 8 Film Ideas (Firm)
• 5 CINEFETE (Firm)
• 4 Bloomberg LP
• 3 Australian Broadcasting Corporation (Firm)
• 3 Kwanza (Firm)
• 3 National Geographic Digital Media (Firm)
• 2 CNN (Firm)
• 2 Canadian Broadcasting Corp. (Firm)
• 2 MVD (Firm)
• 2 Magic Lantern Media Inc (Firm)
• 2 Network Ireland Television (Firm)
• 2 Prime Entertainment Group (Firm)
• 2 Video Education America (VEA) (Firm)
• 1 Discovery Education (Firm)
• 1 EPF Media Group (Firm)
• 1 First Pond Entertainment (Firm)
• 1 Galloping Entertainment (Firm)
• 1 Green Interview (Firm)
• 1 Looking Glass International (Firm)
• 1 MacNeil/Lehrer Productions (Firm)

• 82 English
• 1 Spanish

• 2 Asia
• 1 Africa, Sub-Saharan
• 1 South Asia

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