1.0Spacing Torontohttps://spacing.ca/torontoDylan Reidhttps://spacing.ca/toronto/author/dylan/rich600338<blockquote class="wp-embedded-content" data-secret="LGGLQm6Xdx"><a href="https://spacing.ca/toronto/2006/06/19/sprawl-from-space/">Sprawl from Space</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://spacing.ca/toronto/2006/06/19/sprawl-from-space/embed/#?secret=LGGLQm6Xdx" width="600" height="338" title="“Sprawl from Space” — Spacing Toronto" data-secret="LGGLQm6Xdx" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! 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>   Two University of Toronto profs and some others have studied the spread of urban sprawl in the late 20th century by creating composite satellite maps of American cities comparing 1976 and 1992, and looking at the amount of open space around houses in every U.S. city. Some of the findings are suprising, such asContinue readinghttp://diegopuga.org/data/sprawl/maps/sprawl_stlouis.jpg