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Science 6 February 2009:
Vol. 323. no. 5915, pp. 706 - 708
DOI: 10.1126/science.323.5915.706
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News Focus

EVOLUTIONARY BIOLOGY:
Agreeing to Disagree

Elizabeth Pennisi

Two friends debate the relative importance of kinship in the evolution of complex social systems in insects.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)