The global environment
In this episode, host Peter Krogh examines the international community’s response to some of the most pressing threats facing the environment. Between 1980 and 1988 the ozone shield, which prevents harmful ultraviolet rays from reaching the earth, fell by 5% worldwide and by even more in areas like...
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Language: | English |
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WETA-TV (Television station : Washington, D.C.)
1988
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Online Access: | http://hdl.handle.net/10822/552565 |