How to Study Public Life by Jan Gehl and Birgitte Svarre, published by Island Press , 2013. Hardcover, 200 pages. ( Amazon ) In the question-and-answer session that followed a book talk given by Jan Gehl and Birgitte Svarre at the Center for Architecture on February 5 , Gehl said that politicians in Copenhagen revealed to him quite a compliment: "If you had not made those studies, we would not have tried to make Copenhagen a better city." Those and other public space studies are highlighted in the book he penned with Svarre, yet the evening focused mainly on what can be learned from their home city. How the Danish city has improved in the last five decades – the span of Gehl's career – is obvious to many people, especially those in the packed house at the Center. Nevertheless, Gehl clearly likes to recount how closing streets to cars, promoting bicycling and other measures have made Copenhagen lively, attractive, safe, sustainable, and healthy – the five-fold barome...