Self (4 episodes, 2019)
Self - Bioethicist / Self - Bioethicist (as Dr. Jeffrey Khan) (4 episodes, 2019)
Self (Leber's Congenital Amaurosis) (3 episodes, 2019)
Self - Evolutionary Engineer (3 episodes, 2019)
Self - Jackson's Mother (3 episodes, 2019)
Self - Biophysicist (Dr. Josiah Zayner) / Self - Biophysicist (3 episodes, 2019)
Self (HIV Positive) (3 episodes, 2019)
Self - CEO, Ascendance (3 episodes, 2019)
Self - Jackson's Step Father (2 episodes, 2019)
Self - Friends of the Earth (2 episodes, 2019)
Self - Geneticist (2 episodes, 2019)
Self - Ascendance Labs (2 episodes, 2019)
Self - Co-Discoverer of CRISPR (2 episodes, 2019)
Self - Embryologist (1 episode, 2019)
Self - CEO, Spark Therapeutics (1 episode, 2019)
Self - Chief Science Officer, Spark Therapeutics (1 episode, 2019)
Self (Spinal Muscular Disease) (1 episode, 2019)
Self - Nick's Mother (1 episode, 2019)
Self - Nick's Father (1 episode, 2019)
Self - Developmental Biologist (1 episode, 2019)
Activist / Self - Environmentalist (1 episode, 2019)
Self - Bloomberg News (1 episode, 2019)
Self - Patients for Affordable Drugs (1 episode, 2019)
Self - Fertility Specialist (1 episode, 2019)
Self - Nurse (1 episode, 2019)
Self (1 episode, 2019)
Self - Entomologist, Target Malaria (1 episode, 2019)
Self - Prof. Molecular Biology (1 episode, 2019)
Self - Nick's Brother (1 episode, 2019)
Self - David's Wife (1 episode, 2019)
Self - Molecular Biologist (1 episode, 2019)
Self - Ecologist (1 episode, 2019)
Self - Local Maori Representative (1 episode, 2019)
Self - USA Memory Champion (1 episode, 2019)
Self - President, U.S. National Academy of Medicine (1 episode, 2019)
Self - Ascendance Labs (1 episode, 2019)