• 34 Videos, Slides, Films

• 27 Animals
• 27 Natural history
• 13 Biotic communities
• 13 Habitat (Ecology)
• 8 Physical geography
• 6 Motion picture authorship
• 5 Cosmology
• 4 Astronomy
• 3 Desert ecology
• 3 Deserts
• 3 Grasslands
• 3 Jungles
• 3 Mountains
• 2 Animals and civilization
• 2 Cities and towns
• 2 Climatic changes
• 2 Human ecology
• 2 Islands
• 1 Algae
• 1 Autumn
• 1 Biomass energy
• 1 Caves
• 1 Discovery and exploration
• 1 Economic aspects

• 21 Attenborough, David, 1926-
• 15 British Broadcasting Corporation
• 15 Discovery Channel (Firm)
• 14 BBC Worldwide Americas, Inc.
• 12 BBC Worldwide Ltd.
• 11 BBC America
• 11 British Broadcasting Corporation. Natural History Unit
• 11 France télévision
• 11 Tencent Pictures
• 11 Zweites Deutsches Fernsehen
• 8 Fothergill, Alastair
• 8 Nihon Hōsō Kyōkai
• 6 BBC Earth (Firm)
• 5 Berlowitz, Vanessa
• 5 Independent Communications Associates
• 5 Kennard, David
• 5 Music Video Distributors, Inc.
• 5 Northcutt Productions
• 5 Northcutt, Patsy
• 5 Swimme, Brian
• 5 Tucker, Mary Evelyn
• 5 Yale University. School of Forestry and Environmental Studies
• 3 Cordey, Huw
• 2 Anderson, Justin
• 2 Barton, Miles

• 34 English

• 23 Earth (Planet)
• 8 Polar regions
• 7 Antarctica
• 7 Arctic regions
• 5 Universe
• 1 Everest, Mount (China and Nepal)
• 1 Himalaya Mountains

• 27 Nature television programs
• 17 Nonfiction television programs
• 5 Documentary films
• 5 Environmental films
• 5 Environmental television programs
• 5 Nonfiction films
• 5 Science films

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