First up on the podcast, U.S. aid helped two African countries rein in HIV. Then came President Donald Trump. Senior News Correspondent Jon Cohen talks with producer Kevin McLean about how in Lesotho and Eswatini, treatment and prevention cutbacks are hitting pregnant people, children, and teens especially hard.   This story is part of a series about the impacts of U.S. funding cuts on global health, supported by the Pulitzer Center.   Next on the show, host Sarah Crespi is joined by Robin Wordsworth, the Gordon McKay Professor in the School of Engineering and Applied Sciences at Harvard University. They discuss the challenges and potential of microbes to grow plastics, drugs, and food on the surface of Mars or other bodies in the Solar System.   This week’s episode was produced with help from Podigy.   About the Science Podcast   Authors: Sarah Crespi; Kevin McLean; Jon Cohen Learn more about your ad choices. Visit megaphone.fm/adchoices