How do you display carbon emissi...

Is carbon the elephant in the classroom? - Its the core measure of the greatest challenge facing today's young, but how do we understand what it means? How can we show information about a school's contribution to climate change in a manner that promotes positive action? Should we display in terms of its impact (e.g. sea level rise, hotter planets, etc) its solutions (e.g. wind turbines, trees, etc) or other issues (e.g. cost). What turns students on to turning things off? Please post any thoughts here.