Friday's Notes

Gary Stix,"The Migration History of Humans: DNA Study Traces Human Origins Across the Continents," Scientific American, 7 July, reports on the genetic evidence about ancient human migrations.

Roberta Smith,"Lustrous Visions, Cut From Stone," NYT, 11 July, reviews"Art of the Royal Court: Treasures in Pietre Dure From the Palaces of Europe," an exhibit at New York City's Metropolitan Museum.

Alan Wolfe,"Hedonic Man," TNR, 9 July, reviews Bruno S. Frey's Happiness: A Revolution in Economics and Dan Ariely's Predictably Irrational: The Hidden Forces that Shape Our Decisions. Hat tip.

Jeremy Treglown,"Norman Lewis: travelling salesman," TLS, 9 July, reviews Julian Evans's Semi-Invisible Man: The Life of Norman Lewis. Hat tip.