1.0PortableFireplace.comhttps://www.portablefireplace.com/blogadminhttps://www.portablefireplace.com/blog/author/admin/rich600338<blockquote class="wp-embedded-content" data-secret="y2MvjaeEYI"><a href="https://www.portablefireplace.com/blog/saved-the-world/">How Fireplaces Once Saved the World</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.portablefireplace.com/blog/saved-the-world/embed/#?secret=y2MvjaeEYI" width="600" height="338" title="“How Fireplaces Once Saved the World” — PortableFireplace.com" data-secret="y2MvjaeEYI" 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); //# sourceURL=https://www.portablefireplace.com/blog/wp-includes/js/wp-embed.min.js /* ]]> */ </script> Archeologists have various theories about how humans started using fire. While some think that Homo erectus started using fire in Africa, others believe that Neanderthal man independently started using fire in Europe much later.http://upload.wikimedia.org/wikipedia/commons/thumb/1/19/Japanese_Traditional_Hearth_L4817.jpg/640px-Japanese_Traditional_Hearth_L4817.jpg