Bethany Ehlmann is a professor of planetary science at Caltech and research scientist at NASA's Jet Propulsion Laboratory. Her research focuses on the mineralogy and chemistry of planetary surfaces, remote sensing techniques and instruments, astrobiology, and science policy and outreach. Her primary focus is unraveling Mars' environmental history; she is a member of the science teams for the Mars Exploration Rovers (Spirit and Opportunity), the CRISM imaging spectrometer on the Mars Reconnaissance Orbiter, the Mars Science Laboratory Curiosity rover, and the upcoming Mars 2020 rover. She is also on the Dawn orbiter team exploring the largest asteroid and dwarf planet Ceres, the EMIT space station-based imaging spectrometer to explore dust source regions, and is working to propose mission concepts for Europa, Venus, the Mars moons, asteroids and Earth.