• 1 MERIT Library

• 10 Videos, Slides, Films

• 5 Cosmology
• 4 Astronomy
• 4 Exploration
• 3 Effect of human beings on
• 3 Extinction (Biology)
• 3 Human beings
• 3 Nature
• 3 Nature and civilization
• 2 Big bang theory
• 2 History
• 2 Human ecology
• 2 Stars
• 1 Civilization
• 1 Climatic changes
• 1 Clusters
• 1 Comets
• 1 Constellations
• 1 Continental drift
• 1 Dark matter (Astronomy)
• 1 Effect of climate on
• 1 Evolution
• 1 Exobiology
• 1 Force and energy
• 1 Global temperature changes
• 1 Global warming

• 7 Arts and Entertainment Network
• 7 History (Television network)
• 6 Thompson, Erik, 1959-
• 5 History Channel (Television network)
• 4 Cohen, Douglas J
• 4 Dolan, Samuel K
• 3 Cohen, Douglas
• 2 A & E Home Video (Firm)
• 2 DeVries, David
• 2 Herrmann, Edward, 1943-2014
• 2 Lurie, James (James Harrison)
• 2 Pioneer Productions
• 1 Amdahl, Eric
• 1 Beemer, Rob
• 1 British Broadcasting Corporation
• 1 Burton, Corey
• 1 Campbell, Colin
• 1 Chin, Peter
• 1 Chinn, Peter
• 1 Ellis, Luke
• 1 Georgalis, Savas
• 1 Goritsas, Demetri
• 1 Hearle, Alex

• 10 English

• 5 Outer space
• 3 Milky Way
• 2 Earth (Planet)
• 1 Deep space
• 1 Jupiter (Planet)
• 1 Moon
• 1 Saturn (Planet)
• 1 Sun
• 1 Tierra
• 1 Universe

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