My guess it that the submitter found it in a response to this [1] recent article on environmentalism. The author of this touches similar themes and also mention

My guess it that the submitter found it in a response to this [1] recent article on environmentalism. The author of this touches similar themes and also mentions the same studies as the Discover article. [1] http://www.orionmagazine.org/index.php/articles/article/7277 http://www.orionmagazine.org/index.php/articles/article/7277