A team of researchers from the University of Southern California and NASA's Jet Propulsion Laboratory are sending fungi aboard a SpaceX flight to the ISS on April 8th. Not to expose them to Mars-like conditions like an earlier experiment did, but to see if they can be used to develop medicine in space. See, fungi produce molecules called secondary metabolites that can be used to develop medicine. One good and familiar example is penicillin. However, scientists (including USC professor Clay Wang who's leading this project) found that in many cases, fungi can only generate secondary metabolites when they're put in stressful conditions. And space can provide an environment harsh enough to activate the production of those molecules.