Harold E. Puthoff, PhD

Founder, President & CEO, EarthTech International, Inc.
Director, Institute for Advanced Studies at Austin

Harold (Hal) Puthoff, PhD, is President, CEO and Chairman of the Board of EarthTech International, Inc., and Director of the Institute for Advanced Studies at Austin. Earning his PhD from Stanford University in 1967 as a theoretical and experimental physicist specializing in lasers, his present research activities range from theoretical studies concerning fundamental electrodynamics, gravitation, and the quantum vacuum to laboratory studies of innovative approaches to energy generation and space propulsion.

Eric Davis

Chief Science Officer

Eric W. Davis, Ph.D. is the Chief Science Officer of EarthTech Int’l, Inc. and the Institute for Advanced Studies at Austin. Dr. Davis’ research specializations include breakthrough propulsion physics for interstellar flight, interstellar flight science, beamed energy propulsion, advanced space nuclear power and propulsion, directed energy weapons, future and transformational technology, general relativity theory, quantum field theory, quantum gravity theories, experimental quantum optics, and SETI-xenoarchaeology.

Scott Little


Mr. Little has over forty-five years of experience in experimental physics, engineering and management of technical projects. He has mastered a variety of fabrication techniques and has extensive experience constructing and using laboratory apparatus. He has particular expertise in power-balance measurements including precision calorimetry, and in x-ray fluorescence analysis. In the course of this work he has acquired proficiency in the use of computers to control and monitor laboratory experiments. He also has considerable skill with computer-aided design, including writing custom simulation programs.

Marissa Little


Ms. Little has over a decade of experience in experimental physics and various engineering disciplines. She has the ability to take an experimental project from concept to completion, performing every step along the way. This includes experimental design and construction, where she is skilled in mechanical design, computer drafting, and machining. Many of the experiments she has completed have included sophisticated computer controls and data analysis. Her reports of several experiments have been published in peer reviewed journals.

Collin Puthoff

Chief Operations Officer
Director, Life Sciences & Clinical Medical Research

Collin is a highly-focused management professional whose skills include project management, research, analytics, security, contract negotiation, client relations, medical operations, and medical records management. As COO, Collin negotiates with clients and contractors on a confidential and proprietary basis, researches corporate requirements to assist in aligning priorities and goals, and provides support for meetings, conferences, and lab experiments.

Brendan Puthoff

Chief Financial Officer

Brendan Puthoff joined EarthTech in 2001 following graduation from The University of Texas at Austin with engineering and business degrees. As CFO, Mr. Puthoff administers company human resources, budgeting, major procurement, and consults on strategic vision and funding activities. Brendan lives in Austin with his twin boys Luke & Miles.