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We summarize the week's scientific breakthroughs every Thursday.
A study in twins finds that genes may be responsible for a high or low threshold to the detection of sour tastes, but not of salty ones.
The real Groundhog Day, microfilm book storage, and turning farm waste into chemical products.
In the federal budget for FY 2005, research and development funding for defense and homeland security gets a boost, but overall investment in science and technology is meager by comparison.
A review of important scientific achievements reported in Science News during the year 2003.
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