11.   He was a member of the American Academy of Sciences and its research council.

12.   In its latest report, the research council expressed specific concerns about the accumulation of small bits of debris left over from nearly four decades of rocket launchings.

13.   In January, the research council urged NASA to bolster protective shielding on the international space station it will begin assembling next year.

14.   Several Canadian and U.S. government agencies, including the U.S. Army Corps of Engineers, have approached the research council about using conductive concrete to trap computer signals.

15.   The National Institutes of Health sponsored the two-year study conducted by the research council, the operating arm of the National Academy of Sciences.

16.   The research council generally lauded NASA for retreating from the approach of sending complex, expensive missions such as the Mars Observer.

17.   The research council is an arm of the National Academy Sciences, a group of eminent scientists chartered by Congress to advise the federal government.

18.   The research council urged the space agency to equip the outside of the orbital outpost with radiation monitors as soon as possible.

19.   The research council is trying to blend the old fuel with new supplies and additives to resolve the problem.

20.   The NRC asked the research council to examine its policies governing the release of slightly radioactive materials from the commercial facilities it licenses.