1. NASA scientists detected building block of life in arnsample from comet Wild 2. The presence of the amino acid glycine in the dust was identified in 2006; the new research confirms that it was from the comet, not contamination.rn2. Researchers at the University of Wisconsin have developed a new polymer film for delivering antibacterial silver to wounds. In tests with mouse cells, it killed bacteria while leaving other cells unharmed.rn3. Restrictions on fertilizer use can improve waterrnquality, according to University of Michigan ecologists. Tests showed that phosphorous in the Huron River dropped an average of 28 percent after Ann Arbor limited its use on lawns.
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