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Science  05 Mar 2010:
Vol. 327, Issue 5970, pp. 1188
DOI: 10.1126/science.327.5970.1188

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Summary

ScienceNOW reported this week that an early polar bear has been discovered in Arctic tundra, an appetite-suppressing hormone called leptin is just as effective as insulin at controlling diabetes in mice, engraved eggs suggest early symbolism, and global warming didn't kill the golden toad, among other stories.