1.0Sightline Institutehttps://www.sightline.orgAlan Durninghttps://www.sightline.org/profile/alan-durning/rich600338<blockquote class="wp-embedded-content" data-secret="RmdRg49cYU"><a href="https://www.sightline.org/2004/04/27/are_you_dense/">Are you dense?</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.sightline.org/2004/04/27/are_you_dense/embed/#?secret=RmdRg49cYU" width="600" height="338" title="“Are you dense?” — Sightline Institute" data-secret="RmdRg49cYU" 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> John Holtzclaw, a transportation researcher from the Bay Area of California, has an interesting website that shows the relationships between residential density and driving. It includes photos of different San Francisco neighborhoods and data on their density, fuel use, and air pollution rates. One point: high density doesn’t necessarily mean high rise. You can also […]http://www.sightline.org/wp-content/images/legacy/sprawl-sm.jpg