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Science News for November 5, 2000


Colorado U. study indicates Denver area drivers unmoved by state air quality advisories

A CU-Boulder study found that Denver-area drivers are largely unaware of the impact of air-quality advisories on their transportation habits, despite being aware of the advisories themselves. The study suggests possible alternatives to mitigate the problem, such as subsidizing public transit passes and improving cycling infrastructure.

SourceUniversity of Colorado at Boulder·JournalAtmospheric Environment·DateNov 5, 2000

Scientists discover enzymes capable of duplicating damaged genetic material (DNA) and creating new mutations

A team of scientists has discovered a group of enzymes capable of duplicating damaged genetic material, allowing cells to 'compromise' and replicate with a certain 'sloppiness'. This mechanism increases genetic diversity and enables natural selection, driving the evolutionary process.

SourceAmerican Committee for the Weizmann Institute of Science·JournalProceedings of the National Academy of Sciences·DateNov 5, 2000