Darron Collins, president of the College of the Atlantic (ME), writes:  President Trump may have decided to remove the U.S. from the 194-nation Paris Climate Agreement, but on our campus – and on many others across the nation – we’ll be working harder than ever to advance energy sustainability. It’s true that college campuses themselves have a relatively modest carbon footprint compared to businesses or cities.  However, we have both a special responsibility, because of our nonprofit stature, philanthropic support and influence on the next generation’s education, and a definite advantage, because of our mission and structure, to be powerful laboratories of public good where energy sustainability is concerned — through both teaching and research.