simple guidelines , which are summarised here: Unless you have express permission from the author, you can't edit our material, except to reflect relative changes in time, location and editorial style. To make material edits contact us You have to credit our authors and partner institutions? -- ?ideally in the byline. You have to credit The Conversation? -- ?ideally at the top of the article and include our logo? -- ?with a link back to either our home page, The Conversation , or (preferably) the specific article URL on The Conversation website. If space is tight, you can run the first few lines of the article and then say: "Read the full article at The Conversation" with a link back to the article page on our site. If you're republishing online, you must use our page view counter, link to us, and include links from our story. Join the conversation 25 Comments sorted by PhD candidate in Christian Ethics (PhD candidate in Christian Ethics at University of Edinburgh) Professor Ergas, were all the current global commitments - which, as you correctly point out, are aspirational - to be honoured, then the world would be likely on track to reach 4C above pre-industrial levels within the lifetime of my daughter (should she live to her presumed life-expectancy). My question is: are you up to speed on the latest research on what such a world would involve? (as represented for instance by this recent conference concerning an Australian context: http://www.fourdegrees2011.com.au/ ) about