Bethan is a postdoctoral research scientist in planetary atmospheric evolution. At LASP, her work involves modeling hydrogen escape from the upper atmosphere of Mars. With a background in Earth Sciences, Bethan focused on the evolution of ozone and oxygen in the Earth’s atmosphere over geological time for her PhD thesis, using photochemical modeling to predict isotope signatures preserved in the rock record. Throughout her career to date, Bethan has been interested in applying her studies of terrestrial solar system planets to exoplanet systems and astrobiology.