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The Thin Blue Line

Maple Leaf This item is only available for Canadian orders.
This title is a part of the series Seven Wonders of the Solar System

Catalogue Number:  BBC014
Producer:  BBC
Subject:  Science
Language:  English
Grade Level:  9 - 12, Post Secondary, Adult
Country Of Origin:  U.S.
Copyright Year:  2010
Running Time:  50

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It's hard to believe that only a flimsy envelope of gas protects life on our planet. But, as this program shows, Earth isn’t the only world wrapped in a tenuous, constantly shifting blanket…and at one time, there may have been more. A visit to Africa’s Namib Desert helps illustrate what happened to poor Mercury when, early on, it was stripped of its atmosphere and fully exposed to the Sun’s heat. Aided by a stunning backdrop of Alaskan glaciers, the film segues to a study of Titan, Saturn’s chief moon, which is shrouded in a thick, murky atmosphere. Earth’s probes have detected massive lakes beneath the shroud, but their chemical make-up is not entirely understood—Titan’s atmosphere does its job well.

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