Credit: Getty Images When applied strategically, behavioral nudges could become powerful policy tools in the climate-change fight. If, for instance, utility companies implemented a default choice for renewables (opt-out) , customers could lower their carbon footprints without doing anything. Supermarkets could reduce the consumption of animal products by designing stores that displayed meat and dairy in less accessible areas. And if cities did more to promote bicycling—with more bike lanes than car lanes, for […]