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Science  22 Jan 2010:
Vol. 327, Issue 5964, pp. 401
DOI: 10.1126/science.327.5964.401-b

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Summary

ScienceNOW reported this week on a new calibration curve that extends radiocarbon dating back 50,000 years, a better design for suspension bridges, why fish gills evolved, and a way to make simple droplets of oil navigate complex labyrinths with the same skill as laboratory rodents, among other stories.