Jonathan Clark is an adjunct Associate Professor of Neurology and Space Medicine at Baylor College of Medicine and adjunct Clinical Assistant Professor of Aerospace Medicine at the University of Texas Medical Branch. Dr. Clark served 26 years on active duty with the U.S. Navy, and qualified as a Naval Flight Officer, Naval Flight Surgeon, Navy Diver, U.S. Army parachutist and Special Forces Military Freefall Parachutist. His assignments including heading a research centrifuge facility at the Naval Aerospace Medical Research Lab, and the Neurology and Hyperbaric Medicine divisions at the Naval Aerospace Medical Institute where he treated diving and altitude decompression sickness and studied divers exposed to high intensity sonar. During Operation Desert Storm he was the 3rd Marine Air Wing Special Projects Officer responsible for the Air Wing Chem/Bio Defense Plan and the Sustained Operations Plan. He flew combat medical evacuation missions and was in the first air element into Kuwait City with the Marine Corps. He ran the aeromedical department at Marine Aviation Weapons & Tactics Squadron One, and participated in Marine Recon and ANGLICO fire control teams’ High Altitude jumps. Dr. Clark worked at NASA from 1997 to 2005, was a Space Shuttle Crew Surgeon on six shuttle missions, Chief of the Medical Operations Branch and an FAA Aeromedical Examiner (AME). He was a Member of the NASA Spacecraft Survival Integrated Investigation Team from 2004 to 2007 and a Member of the NASA Constellation Program EVA Systems Project Office Standing Review Board from 2007 to 2010. He was the Space Medicine Advisor for the National Space Biomedical Research Institute from 2005 to 2017. In 2008 he was an expedition physician supporting the Haughton Mars Project on Devon Island in the high Canadian Arctic. He was Chief Medical Officer for the orbital commercial space company Excalibur Almaz from 2007 to 2012, and Chief Medical Officer for the Inspiration Mars Foundation from 2013 to 2018. Dr. Clark was Medical Director of the Red Bull Stratos Project, a manned stratospheric balloon freefall parachute flight test program, which on 14 October 2012 successfully accomplished the highest stratospheric freefall parachute jump (highest exit altitude) from 127,852 feet, achieving human supersonic flight (Mach 1.25) without a drogue chute at 843 miles per hour. In 2012 Dr. Clark joined the StratEx Space Dive project as the lead flight surgeon and medical advisor, and this project set a new high altitude exit freefall record of 135,890 feet reaching Mach 1.22/ 822 miles per hour in 2014. From 2017 to 2020 he was on the Navy Clinical Case Review Panel to address the On Board Oxygen Generator (OBOGS) Physiologic Episodes. He has been a consultant for Virgin Galactic, Heinlein Prize Trust, Paragon Space Development Corp, and SpaceX. He currently works for JAG Human Performance, Space Perspectives, Operator Solutions, and the Foundation for Aerospace Safety and Training. Dr. Clark is board certified in Neurology and Aerospace Medicine and is a Fellow of the Aerospace Medical Association. Recreational activities include scuba diving, parachuting, flying aircraft, and spending time in the wilderness. His professional interests focus on the neurologic effects of extreme environments, crew survival, and resilience.

Dr. Gary Strangman, PhD, is an Associate Professor in the Department of Psychiatry at Harvard Medical School, Director of the Neural Systems Group at Massachusetts General Hospital, and a Lead Scientist for the NASA-funded Translational Research Institute for Space Health. His research focuses on translational neuroscience and behavioral health, and in particular developing and testing novel neuroimaging technologies for use in operational environments including spaceflight. He is affiliated with the MIT Bioastronautics Program, as well as the Baylor College of Medicine's Center for Space Medicine. He currently oversees 12 spaceflight-related research efforts, and has conducted studies in NASA's Human Exploration Research Analog (HERA), the German Aerospace Center (DLR) :envihab facility, parabolic flight, high-altitude settings, Neumayer and Concordia Stations in Antarctica, as well as onboard the ISS.

Dr. Erik R Swenson is an attending physician in pulmonary and critical care medicine division at the Dartmouth Hitchcock Medical Center and a professor of medicine at the Dartmouth School of Medicine in Hanover, NH. He is currently the editor-in-chief of High Altitude Medicine and Biology and is a section editor for the Clinical Pulmonologist section of the Annals of the American Thoracic Society and serves on the editorial boards of the Journal of Applied Physiology and American Journal of Respiratory and Critical Care Medicine.

His clinical interests beyond pulmonary and critical care medicine include high altitude and wilderness medicine, medical education, exercise and sports medicine, and respiratory pharmacology. He is a regular consultant with the US Food and Drug Administration on the safety and efficacy of drugs and devices in pulmonary, cardiovascular and renal medicine.

Dr. Swenson graduated with an AB in biochemistry from Princeton University and his MD from the University of California, San Diego. He underwent a fellowship in pharmacology at the University of Florida and completed residency in internal medicine at the Hospital of the University of Pennsylvania, before completing his pulmonary and critical care medicine fellowship at the University of Washington and the Hammersmith Hospital, Royal Postgraduate Medical School in London, England. He was then appointed to the faculty in the Department of Medicine at the University of Washington. He was invited to be a visiting professor from 1996 to 1997 in the Division of Sports and Performance Medicine of the University of Heidelberg, Germany. After 40 years at the University of Washington he has moved to Dartmouth Medical School in Hanover, NH.

For over 35 years he has been a principal investigator at the Mt Desert Island Biological Laboratory, a marine station on the coast of Maine. His research interests in wilderness medicine include the integrative physiology of humans and animals living in different and extreme environments. This has taken him from studying fish and amphibians in hypoxic and acidic waters to mammals in simulated high altitude and acid-base disturbances in the laboratory to humans at high altitude, in the laboratory and in the intensive care unit. Over his career he has had an abiding interest in high altitude medicine with studies focusing on the pathogenesis, prevention and treatment of acute mountain sickness and high altitude pulmonary edema, including performing bronchoscopy, echocardiography, exercise testing, cellular studies and drug trials on Mt Denali, in Alaska, the Peruvian Andes, the Alps and the Himalayas and in the Rocky and Cascade mountains. Another major area of interest considerably overlapping with his high altitude studies has been the investigation of carbonic anhydrase and its inhibitors, such as acetazolamide, in a variety of organ systems in many creatures, and in the many ways that acetazolamide is useful in prevention and treatment of high altitude illnesses.

Lucas Trout is lecturer on global health and social medicine at Harvard Medical School, faculty director at Siamit, and Sayaqagvik director at Maniilaq Social Medicine. In these roles, Lucas leads clinical, research, and training programs focused on supporting rural and tribal health systems through responsive, equitable, and lasting academic-community partnerships.

Lucas grew up in the Midwest as one of eight siblings. He spent his early career working as a firefighter and EMT in the Mountain West and Alaska, where he discovered a love for the crossroads of health care and social science. He went on to study clinical psychology at Seattle University before returning to Kotzebue to found Maniilaq Social Medicine and Siamit in 2016.

Since then, Lucas and the Siamit family have worked to build a model for tribal health partnerships around the principles of Indigenous leadership, social medicine, and clinical excellence. For this work, Lucas was named a Young Leader in Primary Care by the World Health Organization. In his free time, Lucas likes to roast coffee, read fiction, and skijor with his dog, Casimir.