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John Topping

President (1986-present)

john-toppingB.A., Dartmouth College
J.D., Yale University
Former Staff Director, US EPA’s Office of Air and Radiation                                        Biography


Brian Fowler

Staff Director

B.A. and B.S., University of Utah

Former Political Committee Co-chair, Utah Sierra Club


Rachel Levine

Chief Engineer

RachelB.S. Environmental & Ecological Engineering from Purdue University

Master’s degree in Civil Engineering from the University of Nebraska


Nasir Khattak
Chief Operating Officer, Climate Institute

Nasir KhattakB.Sc. Civil Engineering, Pakistan
M.Sc., Energy & Environmental Management, George Washington University


Mike MacCracken
Chief Scientist for Climate Change Programs

mike maccrackenPh.D. University of California Davis/Livermore
President, International Association of Meteorology and Atmospheric SciencesB.S. Princeton University




Christopher Philipp

e•Learning Director

Winner of the first Emmy for a student-led production, Envision Award from COMDEX

Designed/engineered the first computer/video system used by the National Science Foundation as a nationwide template for public ISE (Informal Science Education) exhibits

Digital Media Tech & Environmental Science teacher – High School & University – 14 years


Sam Sherer

Senior Fellow

A.B., Oberlin College

J.D., Harvard University

M.C.P., City Planning, Massachusetts Institute of Technology


Jack Werner

Senior Fellow

M.P.P., Kennedy School of Government, Harvard University

B.A., University of Nevada Las Vegas

Former Director of D.C. Government Energy Office


Mark Goldberg

Senior Fellow

Yale School of Management

B.A., George Washington University

Executive Vice President of the National Coalition on Health Care

Former White House Staff member