These are extraordinary times of environmental challenge and opportunity in the U.S. How shall we—as environmental scholars, teachers, and citizens—act accordingly? One key need, if we wish to work with and not against our fellow Americans, is to engage successfully with many shades of green: the diverse ways we collectively understand, care about, and take action on environmental issues. This may require that we and our students develop new skills in listening to people who are unlike us, in analytically understanding fundamental differences in how we approach environmental issues, and in practicing civil collaboration—and, when called for, civil disagreement—so as to draw a larger, more inclusive circle around contemporary American environmentalism. This panel features four scholarly presentations highlighting theory and original research applicable to the challenges and opportunities inherent in taking seriously many shades of green.