New data on the grandmother hypothesis:

http://sciencenow.sciencemag.org/cgi/content/full/2009/1028/1

And, because it relates to a topic Dr. Appenzeller brought up – a bit about the evolution of long distance running:

http://www.nytimes.com/2009/10/27/health/27well.html?em

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Joe Alcock

Emergency Physician, Educator, Researcher, interested in the microbiome, evolution, and medicine