One of the disputed H5N1 flu virus papers is now out; the other is on the way. Two swell explainers explain that and much more. But wait, there's more in other H5N1 blog posts too. What does childhood bad behavior portend? How to read science news. Why sex robots won't eliminate sex trafficking. Twitter is terrible at prediction. NEJM 200th birthday, a medical timeline, and how the journal invented science journalism's schedule. Plus Atul Gawande's horrifically beautiful history of surgery,