Curbing climate change — and extreme weather for future generations — depends squarely on society’s ability to rapidly build new clean energy infrastructure despite the messy puzzle of local, state and federal reviews projects must overcome. The Massachusetts Institute of Technology is offering a first-of-its-kind course that trains students to be mediators in conflicts over clean energy projects. Supervised by a professional mediator, students work directly with developers, local officials and community members. Students get academic credit and hands-on experience addressing real-world dilemmas, while the community and developer get free help resolving conflict.