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Science News for September 10, 2000


Chronic lead contamination in San Francisco Bay shows long-term persistence of lead from past use of leaded gasoline

A study published in PNAS reveals that lead contamination in San Francisco Bay will continue to affect the environment for decades due to the persistence of contaminated soils and sediments. Researchers found that lead from past gasoline emissions still accounts for most of the lead in water samples, with limited mobility out of the bay.

SourceUniversity of California - Santa Cruz·JournalProceedings of the National Academy of Sciences·DateSep 10, 2000

Potent potential antibiotic found

Researchers at the University of Michigan have discovered a powerful new antibiotic candidate, PD 404182, which is 10,000 times more effective than other known inhibitors of a key enzyme in Gram-negative bacteria. The compound targets KDO 8-P synthase, essential for bacterial cell surface formation, and shows promise in weakening bacte...

SourceUniversity of Michigan·JournalJournal of the American Chemical Society·DateSep 10, 2000

Researchers design test for visioning ability

A team of Penn State researchers has developed a scale to measure an individual's visioning ability, which is the capacity to summon a vivid mental image of their organization's future. The scale was validated through five survey groups and showed significant correlation with positive outlook and inspirational motivation.

SourcePenn State·JournalPsychological Reports·DateSep 10, 2000