http://www.bigthink.com/adobe/Logo_250X250.jpg http://www.bigthink.com/adobe/Background_1024X576.jpg http://www.bigthink.com/adobe/Banner_686X60.jpg http://www.bigthink.com/adobe/Half-Banner_234X60.jpg http://www.bigthink.com/adobe/Logo_250X250 http://www.bigthink.com/adobe/Logo-Watermark_250X250.jpg http://www.bigthink.com/adobe/Background_1024X576.jpg http://www.bigthink.com/adobe/Half-Banner-ALT_234X60.jpg Bigthink - Idea Comments Feed Bigthink http://www.bigthink.com/feed/rss/comment/idea/7426 Sat, 30 Aug 2008 03:22:27 +0100 FeedCreator 1.7.2 Comment on: Re: The humble fence: most important technological development in human history? http://www.bigthink.com/science-technology/7426 To clarify, birds build nests, beavers construct damns, insectivores create burrows, just to mention a few "animals" which deal with shelter and protection, so to speak. Bigthink Mon, 18 Feb 2008 21:21:34 +0100 http://www.bigthink.com/science-technology/7426/#8915