How the city hurts your brain ...And what you can do about it By Jonah Lehrer January 2, 2009 E-mail this article To: Invalid email address Add a personal message: Your e-mail: Invalid email address Sending your article Your article has been sent. Print| Reprints| | Text size – + THE CITY HAS always been an engine of intellectual life, from the 18th-century coffeehouses of London, where citizens g