Joshua Greene is the head of energy and natural resources at Patton Boggs, an international law firm specializing in global business and trade for nearly 50 years. Since joining the firm in 2002, Greene has worked on the Energy Policy Act of 2005 and the Energy Independence and Security Act of 2007, cementing his reputation as a green energy advocate and policymaker. Joshua Greene is the head of energy and natural resources at Patton Boggs, an international law firm specializing in global business and trade for nearly 50 years. Since joining the firm in 2002, Greene has worked on the Energy Policy Act of 2005 and the Energy Independence and Security Act of 2007, cementing his reputation as a green energy advocate and policymaker.