Losing years of progress against HIV, and farming plastic on Mars
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
--------
31:12
--------
31:12
Will your family turn you into a chatbot after you die? Plus, synthetic squid skin, and the sway of matriarchs in ancient Anatolia
First up on the podcast, Contributing Correspondent Andrew Curry joins host Sarah Crespi to discuss a pair of Science papers on kinship and culture in Neolithic Anatolia. The researchers used ancient DNA and isotopes from 8000 to 9000 years ago to show how maternal lines were important in Çatalhöyük culture.
● E. Yüncü et al., Female lineages and changing kinship patterns in Neolithic Çatalhöyük, 2025
● D. Koptekin et al., Out-of-Anatolia: Cultural and genetic interactions during the Neolithic expansion in the Aegean, 2025
Next on the show, researchers were able to make a synthetic material that changes color in the same way squids do. Georgii Bogdanov, a postdoctoral researcher in the Department of Chemical and Biomolecular Engineering at the University of California, Irvine, talks about how his lab was able to discover the subcellular arrangement of proteins in the squid cells and mimic this structure synthetically using titanium dioxide deposition.
Finally, the latest book in our series on science and death. Books host Angela Saini talks with Tamara Kneese about her book Death Glitch: How Techno-Solutionism Fails Us in This Life and Beyond and whether our families can turn us into chatbots after we die.
This week’s episode was produced with help from Podigy.
About the Science Podcast
Authors: Sarah Crespi; Andrew Curry; Angela Saini
Learn more about your ad choices. Visit megaphone.fm/adchoices
--------
45:57
--------
45:57
How effective are plastic bag bans? And a whole new way to do astronomy
First up on the podcast, the Vera C. Rubin Observatory is just coming online, and once fully operational, it will take a snapshot of the entire southern sky every 3 days. Producer Meagan Cantwell guides us through Staff Writer Daniel Clery’s trip to the site of the largest camera ever made for astronomy.
Next on the show, probing the impact of plastic bag regulations. Environmental economist Anna Papp joins host Sarah Crespi to discuss her work comparing litter collected by shore cleanup efforts before and after the onset of plastic bag bans.
In a sponsored segment from the Science/AAAS Custom Publishing Office, Erika Berg, senior editor of custom publishing, interviews professors Deepak Bhatt and Filip Swirski about advances in the science of heart health. This segment is sponsored by the Icahn School of Medicine at Mount Sinai.
This week’s episode was produced with help from Podigy.
Authors: Sarah Crespi; Meagan Cantwell; Daniel Clery
Learn more about your ad choices. Visit megaphone.fm/adchoices
--------
38:25
--------
38:25
Why peanut allergy is so common and hot forests as test beds for climate change
First up on the podcast, Staff Writer Erik Stokstad talks with host Sarah Crespi about how scientists are probing the world’s hottest forests to better understand how plants will cope with climate change. His story
is part of a special issue on plants and heat, which includes reviews and perspectives on the fate of plants in a warming world.
Next on the show, “convergent” antibodies may underlie the growing number of people allergic to peanuts. Sarita Patil, co-director of the Food
Allergy Center at Massachusetts General Hospital and assistant professor at Harvard Medical School, joins the podcast to discuss her research on allergies and antibodies. She explains how different people appear to create antibodies with similar gene sequences and 3D structures that react to peanut proteins—a big surprise given the importance of randomness in the immune system’s ability to recognize harmful invaders.
This week’s episode was produced with help from Podigy.
About the Science Podcast
Authors: Sarah Crespi; Erik Stokstad
Learn more about your ad choices. Visit megaphone.fm/adchoices
--------
38:22
--------
38:22
Farming maize in ice age Michigan, predicting the future climate of cities, and our host takes a quiz on the sounds of science
First up on the podcast, we hear from Staff Writer Paul Voosen about the tricky problem of regional climate prediction. Although global climate change models have held up for the most part, predicting what will happen at smaller scales, such as the level of a city, is proving a stubborn challenge. Just increasing the resolution of global models requires intense computing power, so researchers and city planners are looking
to other approaches to find out what’s in store for cities.
Next on the show, a visit to Michigan’s Upper Peninsula, where researchers have found evidence that the Indigenous Menominee people cultivated maize for 600 years, even during an ice age. Madeleine McLeester, assistant professor in the department of anthropology at Dartmouth College, talks about using lidar to search among the heavily forested lands for striations that indicate corn farming and the anthropological conundrums raised by such extensive agriculture without nearby urban centers.
Finally in this episode, producer Kevin McLean quizzes host Sarah Crespi on some mysterious sounds that have appeared on the site as part of news stories. No clues here so be sure to play along.
This week’s episode was produced with help from Podigy.
About the Science Podcast
Authors: Sarah Crespi; Paul Voosen; Kevin McLean
Learn more about your ad choices. Visit megaphone.fm/adchoices
USA