Greg researches the emergence of new industries. His context is commercial spaceflight, a field in which he is regarded as a global expert. He serves as Chair of the Safety Working Group in the Commercial Space Transportation Advisory Committee at the FAA. He served on the NASA Agency Review Team and as White House Liaison at NASA. He sits on the editorial board of the New Space Journal. Greg started his career as serial entrepreneur in video games, computer services, Internet content, enterprise applications, health care IT and material upcycling. He is the coauthor of Death by China. He previously taught entrepreneurship, strategy and economics at UC Irvine.