This Podcast features an interview with Douglas Emlen, author of a paper that was released in Science Express on 26 July 2012 and will appear in the 17 August 2012 issue of Science. Emlen discusses his group’s discovery that insulin signaling is involved in regulating the growth of the male rhinoceros beetle’s horn. Male rhinoceros beetles use their horns to fight for access to females, and males with larger horns generally win more fights and produce more offspring. In this study, E
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