HOME / Copenhagen Consensus 2012 : The 10 most effective ideas for improving the world. War Is a Long, Messy Hell And it’s more important than ever that we try to prevent it in the first place. By Bjørn Lomborg|Posted Wednesday, May 9, 2012, at 3:10 PM Tweet Tweet MYSLATE Save this story. Follow all Copenhagen Consensus 2012 articles. Follow the Technology section. Follow stories by Bjørn Lomborg. MySlate is a new tool that lets you track your favorite parts of Slate. You can follow authors and sections, track comment threads you're interested in, and more. SLATE'S MOST VIRAL There Is Nothing Miraculous About a Tornado, Wolf Blitzer A Huge Discovery About Prime Numbers—and What It Means for the Future of Math Steve Jobs’ Dream Device Has Arrived, and It's Made by Microsoft Bjørn Lomborg is the author of The Skeptical Environmentalist and Cool It, subject of the film Cool It, director of the Copenhagen Consensus Center, and adjunct professor at Copenhagen Business School. Click here to load comments.