1.0planet forward//www.getitdoneaz.comunsw australia//www.getitdoneaz.com/author/unswaustralia/ rich600338<blockquote class="wp-embedded-content" data-secret="2w52vfjo0h"><a href="//www.getitdoneaz.com/story/urban-agriculture-growing-food-in-expanding-cities/">urban agriculture: growing food in expanding cities</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="//www.getitdoneaz.com/story/urban-agriculture-growing-food-in-expanding-cities/embed/#?secret=2w52vfjo0h" width="600" height="338" title="“urban agriculture: growing food in expanding cities” — planet forward" data-secret="2w52vfjo0h" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![cdata[ */ /*! this file is auto-generated */ !function(d,l){"use strict";l.queryselector&&d.addeventlistener&&"undefined"!=typeof url&&(d.wp=d.wp||{},d.wp.receiveembedmessage||(d.wp.receiveembedmessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-za-z0-9]/.test(t.secret)){for(var s,r,n,a=l.queryselectorall('iframe[data-secret="'+t.secret+'"]'),o=l.queryselectorall('blockquote[data-secret="'+t.secret+'"]'),c=new regexp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentwindow&&(s.removeattribute("style"),"height"===t.message?(1e3<(r=parseint(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new url(s.getattribute("src")),n=new url(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeelement===s&&(d.top.location.href=t.value))}},d.addeventlistener("message",d.wp.receiveembedmessage,!1),l.addeventlistener("domcontentloaded",function(){for(var e,t,s=l.queryselectorall("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getattribute("data-secret"))||(t=math.random().tostring(36).substring(2,12),e.src+="#?secret="+t,e.setattribute("data-secret",t)),e.contentwindow.postmessage({message:"ready",secret:t},"*")},!1)))}(window,document); /* ]]> */ </script> how we use urban land is shaping up as one of the biggest dilemmas of the 21st century. a booming population needs to be housed, but it also needs to be fed, and the cost of relying on imported food is already being felt.by 2050 more than twice as many of us will be living...