A provocative article appeared in The Nation recently: “Guns Beat Green: The Market Has Spoken.” The author postulates that those investing in private security and defense companies will do better — at least in the short run — than those who put a special focus on green technology. Given the recent emphasis by the media on the promise of these emerging green technologies, this article’s point of view is disappointing to me. This imbalance could be true for a while, until the return on investment for green technologies is equal to or better than that of the conventional technologies. I’m personally making some investments in green technology companies and funds because I believe in learning by doing.