1.0The Edron Academy (El Colegio Británico, A.C.)https://edron.edu.mx/mirrorsite2rich600338<blockquote class="wp-embedded-content" data-secret="r7vUrmeXK2"><a href="https://edron.edu.mx/mirrorsite2/a-brief-history-of-sewage/">A Brief History of Sewage</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://edron.edu.mx/mirrorsite2/a-brief-history-of-sewage/embed/#?secret=r7vUrmeXK2" width="600" height="338" title="“A Brief History of Sewage” — The Edron Academy (El Colegio Británico, A.C.)" data-secret="r7vUrmeXK2" 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://edron.edu.mx/mirrorsite2/wp-includes/js/wp-embed.min.js /* ]]> */ </script> https://edron.edu.mx/mirrorsite2/wp-content/uploads/2022/09/Blog-disno-pequena.jpg300214By Mike Smith I had a real life outside of the classroom before joining the teaching profession. My first few jobs were with various water utility companies in the U.K., largely dealing with river pollution and wastewater treatment. I always had an interest in science …