Leaving with empty hands, should Rio+20 participants nonetheless leave with a sense of optimism? Posted 27 Jun 2012 / 0 Nature Editorial “A First Step“ Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Share on Tumblr (Opens in new window) Tumblr Share on LinkedIn (Opens in new window) LinkedIn Share on WhatsApp (Opens in new window) WhatsApp Share on Reddit (Opens in new window) Reddit Share on Telegram (Opens in new window) Telegram Email a link to a friend (Opens in new window) Email Related A Minor Post, Conservation Biology, Public Policy, Sustainability