1.0Policy Optionshttps://policyoptions.irpp.org/fr/rich600338<blockquote class="wp-embedded-content" data-secret="kbkHUELRU4"><a href="https://policyoptions.irpp.org/fr/authors/peter-horton/">Peter Horton</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://policyoptions.irpp.org/fr/authors/peter-horton/embed/#?secret=kbkHUELRU4" width="600" height="338" title="“Peter Horton” — Policy Options" data-secret="kbkHUELRU4" 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> https://policyoptions.irpp.org/wp-content/uploads/2025/03/Peter-Horton.jpg200200Peter Horton is emeritus professor of biochemistry in the Department of Molecular Biology and Biotechnology and chief research advisor to the Grantham Centre for Sustainable Futures at the University of Sheffield.