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.

“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