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Science  20 Mar 2009:
Vol. 323, Issue 5921, pp. 1551
DOI: 10.1126/science.323.5921.1551b

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Summary

Highlights from Science's online daily news site, Science NOW , this week include a superconductor with a split personality, self-medicating caterpillars, and evidence that our solar system has always preferred left-handed amino acids.