I've got your missing links right here (24 September 2011)

Top picks In India’s lush Kaziranga National Park, a new policy allows rangers to shoot rhino poachers on sight. As a result, rhinos and tigers are thriving. An absolutely stonking piece of journalism. Plant RNAs switch genes on and off in mammals. Wow. We really are what we eat. "Somebody else can clean up this mess." But no one did." New study challenges the role of so-called longevity genes Robert Krulwich's paean to the awesome bar-tailed godwit, the toughest little bird you've never heard of A useful rape analogy. Singapore is growing by importing sand, at other nations' environmental expense Science "partially retracts" XMRV-chronic fatigue paper, and a nine-lab study fails to confirm the link. More from the NYT This week a team of London surgeons separated twins joined at the head. How did they do it? Great explainer by Ferris Jabr Premature particles perplex physicists. Phil Plait pontificates Data ...