Energy Secretary Ernest Moniz (Manuel Balce Ceneta/AP)

Energy Secretary Ernest Moniz has tapped highly regarded environmentalist Kevin Knobloch, most recently president of the advocacy group Union of Concerned Scientists, to be his chief of staff.

Knobloch had also been the organization’s legislative director for arms control and national security and had worked on the Hill in the ‘80s as legislative director for former Democratic senator Tim Wirth of Colorado and legislative assistant and press secretary for former New York Democratic representative Ted Weiss.