FEATURES & DETAILS:
- Copyright: 1993
- Color
- MARC records, Catalog Card Kit and Single Main Entry Cards are available
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PRODUCT SUMMARY
This title is still available for purchase, however we recommend the completely new DVD titles Air Quality and Global Climate Change from the Environmental Science for Students DVD series which is also from Schlessinger Media.
The importance of the ozone layer, the invisible layer that protects Earth's atmosphere, is the focus of this program. Ozone molecules are examined, and the need for an oxygen/ozone balance in the atmosphere is explained. The Earth at Risk Scholars measure UV radiation and examine ozone by creating static electricity. Mario Molina, an atmospheric chemist at MIT, discusses the hole in the ozone layer over Antarctica and the gradual depletion of the ozone caused by the accumulation of gases like methane in the atmosphere, the combustion of fossil fuels and plastics, chlorofluorocarbons from refrigerators and spray cans, and nitrous oxide from fertilizers. Part of The Earth at Risk Environmental Video Series that examines the threats facing Earth and the environment.
EDITORIAL REVIEWS
"
...The Earth at Risk series is highly recommended...Editor's Choice." - Video Librarian"The videos present up-to-date facts about the topic with charts, computer graphics, statistical facts, and interviews with environmentalists and other scientists. Each program moves quickly and smoothly from segment to segment; the segments featuring teenage students will especially appeal to teen viewers who will be able to duplicate the experiments themselves." - School Library Journal
"The series message...is effectively made...well produced...Good choices for school and public libraries."- Library Journal