I was watching a recording of Dr. David Orr's talk, "Black Swans and the US Future: Creating Sustainable and Resilient Societies", when a question was raised at the end of the talk from a K-12 teacher group about what was the one thing teachers could do the classrooms. His answer, in my opinion, was right on target. I obtained a copy of the video of the talk and extracted the clip of this question and his answer. I think you will find the short video interesting.
This talk is part of the Hot Science - Cool Talks program of the Environmental Science Institute at UT Austin. You can watch the complete talk at http://www.esi.utexas.edu/k-12-a-the-community/hot-science-cool-talks/black-swans-a-the-us-future-creating-sustainable-a-resilient-societies