alternative_right shares a report from The Conversation: Countries around the world have been discussing the need to rein in climate change for three decades, yet global greenhouse gas emissions -- and global temperatures with them -- keep rising. When it seems like we're getting nowhere, it's useful to step back and examine the progress that has been made. Let's take a look at the United States, historically the world's largest greenhouse gas emitter. Over those three decades, the U.S. populat…