Pope Francis' Thought-Provoking Climate Change Tweets

Pope Francis took a historical step Thursday publishing a 180-page document urging every citizen of the world to take action on climate change. But the pontiff didn't leave it at a lengthy letter — he tweeted, a lot. Over the course of Thursday he sent 63 tweets using the hashtag #LaudatoSi, including: "The earth, our home, is beginning to look more and more like an immense pile of filth," which struck a particular chord with the thousands that retweeted it. The Pope took over the @Pontifix Twitter account when he became the bishop of Rome in 2013 and has sent more than 600 tweets to his 6.3 million followers. It was Pope Benedict XVI who signed the Vatican up to Twitter, setting up the @Pontifix account in 2012 and tweeting 39 times. After Benedict became the pope emeritus the Vatican deleted all of his tweets.