ABC Evening News for Sunday, Nov 04, 1990
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(Studio: Forrest Sawyer) Report introduced.
(Sequoia National Park, California: Ken Kashiwahara) Threat of air pollution to national parks nationwide featured; scenes shown from Shenandoah National Park, Virginia, and Sequoia National Park, California. [Air quality specialist Dave HASKELL - says air pollution is greatest threat to Shenandoah park.] [TOURIST - expresses disappointment.] [Park ranger Mike YOCHIM - says Sequoia park has bad air pollution.] Study to see if sequoia trees are being affected by air pollution reviewed; scenes shown of giant outdoor laboratory. [Air quality specialist Diane EWELL - talks about what might be lost in the future.]
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