|Reefs at Risk|
|June 1997||Table of Contents||Volume 42||Number 6|
Scientific Databases Caught In Copyright Web
Gauging the Health of the World's Coral
Reefs: Monitoring vs. Mapping
by Robert N. Ginsburg From Southeast Asia to South Florida, coral reefs show signs of decline. Growing concern about the health of the world's reefs has mobilized the international scientific community. What can geology offer to the global effort to assess the state of these ecologically and economically valuable resources -- and preserve them for future generations?
Is Ward Valley Safe? A Point/Counterpoint Discussion
by Howard Wilshire and John B. Robertson The controversy over Ward Valley -- California's proposed disposal site for low-level radioactive wastes -- continues. In this "Point/Counterpoint" exchange, Howard Wilshire argues that serious technical questions about the site remain. John B. Robertson counters that further tests and monitoring while work proceeds could resolve these concerns; the real problem is social and political opposition.
Paleoflood Hydrology in South Africa
by Peter K. Zawada Estimating the likelihood of floods in semi-arid South Africa is no easy task; annual rainfall (and river flow) can vary considerably from year to year and flood records are short or nonexistent. But studying the physical evidence from past floods can help hydrologists predict the probability and potential severity of future flooding.