On March 15, millions of students in 1,500 cities worldwide marched to protest political inaction on climate change. Four days later, Gwinnett County residents voted down the MARTA referendum that could help curb our region’s carbon emissions. The dichotomy of these events gave me pause.I think it’s safe to say we all want to breathe clean air and drink clean water, but when it gets down to brass tacks — we’re stuck.