Survivors have lower-than-expected levels of the stress hormone cortisol.

Why the disproportionate number of Jews with Nobel prizes? The latest answer—genetic adaptation—is insufficient, and no one has identified how it works.   

Are Ashkenazi Jews descended from a semi-nomadic Turkic tribe that converted to Judaism in the 10th century? The theory is beguiling; it’s also false.    

A new genetic study of Ashkenazi Jews traces their maternal lineage to Europe rather than the Near East—suggesting, if true, that Jewish men married local women.