<p>2009:</p>
<p>1) Boston
2) Berkeley
3) Los Angeles
4) Tokyo
5) Orsay
6) Chicago</p>
<p>[The</a> World’s Leading Science Cities - Richard Florida - The Atlantic Cities](<a href=“http://www.theatlanticcities.com/jobs-and-economy/2013/05/worlds-leading-centers-physics/5403/]The”>http://www.theatlanticcities.com/jobs-and-economy/2013/05/worlds-leading-centers-physics/5403/)</p>
<p><a href=“http://cdn.theatlanticcities.com/img/upload/2013/04/25/Untitled-2%20copy.jpg[/url]”>http://cdn.theatlanticcities.com/img/upload/2013/04/25/Untitled-2%20copy.jpg</a></p>
<p>[Top</a> 20 ranked cities as a function of time. : Characterizing scientific production and consumption in Physics : Scientific Reports : Nature Publishing Group](<a href=“Characterizing scientific production and consumption in Physics | Scientific Reports”>Characterizing scientific production and consumption in Physics | Scientific Reports)</p>