document.write('<span class="PubAdAI">');PubMatic.pmAdInfo.setNetworkId('0',165,0,3.000000,0.000000,'',0.000000,'7DEC73D3-F775-4CA3-ABED-5F121F2A8421');var str = '%3Cscript%20src%3D%22http%3A%2F%2Ftag.contextweb.com%2FTagPublish%2Fgetjs.aspx%3Faction%3DVIEWAD%26cwrun%3D200%26cwadformat%3D300X250%26cwpid%3D557820%26cwwidth%3D300%26cwheight%3D250%26cwpnet%3D1%26cwtagid%3D433002%22%3E%3C%2Fscript%3E';
document.writeln(decodeURIComponent(str));
document.write('<iframe name="pbeacon" frameborder="0" allowtransparency="true" hspace="0" vspace="0" marginheight="0" marginwidth="0" scrolling="no"  width="0"  height="0" style="position:absolute;top:-20000px;" src="http://aktrack.pubmatic.com/AdServer/AdDisplayTrackerServlet?operId=1&pubId=118367&siteId=144506&adId=707319&adServerId=165&kefact=3.000000&kaxefact=3.000000&kadNetFrequecy=0&kadwidth=300&kadheight=250&kadsizeid=225&kltstamp=1461236327&indirectAdId=534002&adServerOptimizerId=1&ranreq=0.0021726323757320642&kpbmtpfact=0.000000&dcId=2&tldId=20327577&passback=3&imprId=7DEC73D3-F775-4CA3-ABED-5F121F2A8421&oid=7DEC73D3-F775-4CA3-ABED-5F121F2A8421&ias=257&crID=0&campaignId=0&domain=www.grist.org&pageURL=http%3A%2F%2Fgrist.org%2Ffood%2Fevolution-or-gentrification-do-urban-farms-lead-to-higher-rents%2F"> </iframe>');
document.write('<!-- PubMatic Ad Ends --></span>');/* ADS44028: *//* etsdiff:85790 *//* u_ts:2016-4-21%2010%3A58%3A47, u_tz:0 *///