• 19 Natural history
• 18 Ecology
• 11 Biotic communities
• 11 Habitat (Ecology)
• 9 Physical geography
• 6 Climatic changes
• 5 Animal diversity
• 5 Animal ecology
• 5 Biodiversity
• 5 Evolution (Biology)
• 5 Motion picture authorship
• 4 Grasslands
• 3 Desert ecology
• 3 Deserts
• 3 Islands
• 3 Jungles
• 2 Animals and civilization
• 2 Cities and towns
• 2 Forests and forestry
• 1 Caves
• 1 Desertification
• 1 Forest ecology
• 1 Fresh water
• 1 Heat

• 14 Attenborough, David, 1926-
• 10 BBC Worldwide Ltd.
• 9 BBC America
• 9 BBC Worldwide Americas, Inc.
• 9 British Broadcasting Corporation
• 9 British Broadcasting Corporation. Natural History Unit
• 9 Discovery Channel (Firm)
• 9 Fothergill, Alastair
• 9 France télévision
• 9 Nihon Hōsō Kyōkai
• 9 Tencent Pictures
• 9 Zweites Deutsches Fernsehen
• 5 ARTE France
• 5 Campbell-Staton, Shane
• 5 Love Nature (Firm)
• 5 Passion Planet (Firm)
• 5 Public Broadcasting Service (U.S.)
• 4 Keyte, Charlotte
• 3 Cordey, Huw
• 3 Keeling, Rachelle
• 2 Berlowitz, Vanessa
• 2 Charles, Ed
• 2 Devas, Fredi
• 2 Harris, Rebecca (Television producer)
• 2 Hunter, Chadden Piers

• 24 English

• 2 Polar regions
• 1 Everest, Mount (China and Nepal)
• 1 Himalaya Mountains

Limit year range