Putin Reverses Position on Global Warming, Backs UN Climate-change Agreement Prison Planet.com Posted on December 16, 2015 Posted in Aggregated No Comments Tagged with Sci Tech New American | “Climate change has become one of the gravest challenges humanity is facing,” Putin said in his remarks. Share this:Share Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Email a link to a friend (Opens in new window) Email