. "Climate puzzle"@en . "Climate puzzle" . . . . . . "Explains why no human being has ever experienced the earth's normal climate. Questions will the climate change again and why, and is the earth entering a new ice age, or will the current global warming trend hold off the inevitable?" . . "Planet earth no. 3 The climate puzzle" . "Planet earth. Episode 3. The climate puzzle"@en . . . . . . . . . . . . "Scientists tell us that no human beings have ever experienced the earth's \"normal climate.\" Civilization has flourished in a narrow window between vast ice ages. When will climate change and why?" . "Scientists tell us that no human beings have ever experienced the earth's \"normal climate.\" Civilization has flourished in a narrow window between vast ice ages. When will climate change and why?"@en . "Planet earth. Volume 3, The climate puzzle" . . . . . "Is a new Ice Age inevitable or will life on Earth disappear in a colossal flood? This video examines milestones in climate science that reveal a half million year history of Earth's weather. Join scientists as they comb in continents in search of the forces generating our climate.\"--P. [4] of cover." . "Planet earth #3 : The climate puzzle" . . . "Planet Earth. 3, The climate puzzle"@en . . . . . . "Planet earth. 3, The climate puzzle"@en . . "Planet Earth. Episode three, The climate puzzle"@en . "Planet Earth. Episode three, The climate puzzle" . . . . . . . . . . . . . . "Planet Earth Episode three, The climate puzzle"@en . . "Planet earth. v. 3, The climate puzzle"@en . "Planet earth. Episode 3, The climate puzzle"@en . . "Tracing the earth's climatic trends over the millenia, scientists explore the narrow window between ice ages in which civilization has flourished and speculate on future developments."@en . "Shows the search to unravel the earth's climate. Examines how and why it changes and how the changes can be plotted with new machines."@en . . . . . "Explores the factors that influence the earth's climate and how climatic changes affect life forms. Suggested audience: secondary, general."@en . "Explores the factors that influence the earth's climate and how climatic changes affect life forms. Suggested audience: secondary, general." . . . . . . . . . . . . . "Earth (Planet)" . . "Easton Press Video." . . "MacArthur Foundation Library Video Classics Project." . . "Annenberg/CPB collection." . . "Payless Entertainment Pty Ltd." . .