Science Magazine Podcast

Shielding astronauts from cosmic rays, and planning the end of fossil fuels

First up on the podcast, how do we protect astronauts when they leave the shelter of Earth’s protective magnetic fields and face the slow, constant bombardment of space radiation? Freelance science journalist Elie Dolgin [https://www.eliedolgin.com/] joins host Sarah Crespi to discuss what we know about the damage from high-velocity particles and the research being done to curb their biological toll [/doi/10.1126/science.z0xxk8b]. Next on the show, modeling the fall of fossil fuels during the decarbonization of energy systems, with civil engineer and environmental sociologist Emily Grubert [https://emilygrubert.org/]and historian and engineer Joshua Lappen [https://pulte.nd.edu/people/staff/josh-lappen/], both at the University of Notre Dame. The pair wrote a policy forum on predicting chokepoints or “minimum viable scales” in the decline of fossil fuel networks—in effect, when a system might get too small to maintain its function [/doi/10.1126/science.Aea0972%20]. Understanding how to keep things online until they are no longer needed is important to maintain energy for all, as renewables grow and mines, pipelines, and refineries shrink. This week’s episode was produced with help from Podigy [https://podigy.co/]. About the [/content/page/about-science-podcast]Science [/content/page/about-science-podcast] Podcast [/content/page/about-science-podcast] Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

Tracking falling space debris via sonic booms, and getting drunk off your own microbes

First up with Jennie Erin Smith, Science’s new senior biomedicine reporter, we delve into: autobrewery syndrome [/content/article/how-some-people-get-drunk-their-own-gut-bacteria], when microbes inside the human gut make too much alcohol; how doctors can use a public repository, the Mexican Biobank, to guide patient care [/content/article/trove-mexican-genomes-could-help-guide-prescribing-decisions]; and preliminary findings that surgery on the brain’s plumbing [/content/article/brain-s-plumbing-inspires-new-alzheimer-s-strategies-and-controversial-surgeries] shows promise for Alzheimer’s disease. Next on the show, it’s tough to calculate when and where deorbiting spacecraft might enter the upper atmosphere and then eventually hit the ground. Benjamin Fernando [https://eps.jhu.edu/directory/benjamin-fernando/], a seismologist and planetary scientist at Johns Hopkins University, has shown that sonic booms created by fast-moving space debris shake seismic sensors [/doi/10.1126/science.adz4676], giving clues to angle of re-entry, breakup dynamics, and final location. This week’s episode was produced with help from Podigy [https://podigy.co/]. About the [/content/page/about-science-podcast]Science [/content/page/about-science-podcast] Podcast [/content/page/about-science-podcast] Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

Reversing ecological destruction in the Galápagos, and finally mapping Antarctica’s surface

First up on the podcast, freelance science journalist Sofia Quaglia [https://www.theopennotebook.com/writers/sofia-quaglia/] talks about her visit to the Galápagos archipelago and how researchers there are working to restore the islands [/doi/10.1126/science.z9u24y7] to their former ecological glory. *Note this episode has been updated to reflect that the Ecuadorian government is not responsible for primarily funding these efforts. Next on the show, Antarctica’s deep ice coating obscures the hills and valleys on its surface, making the continent’s response to climate change one of the biggest unknowns in predicting sea level rise over the next century. Helen Ockenden [https://www.ige-grenoble.fr/-Members-], a glaciologist at Grenoble Alpes University, joins the podcast to discuss how her team used satellite imagery and the physics of ice flows to fill in the missing details of Antarctica’s subglacial surface [/doi/10.1126/science.ady2532]. This week’s episode was produced with help from Podigy [https://podigy.co/]. About the [/content/page/about-science-podcast]Science [/content/page/about-science-podcast] Podcast [/content/page/about-science-podcast] Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

The real da Vinci code, and the world’s oldest poison arrows

First up on the podcast, scholars are on a quest to find Leonardo da Vinci’s DNA [/doi/10.1126/science.zdq8w5s]. With no direct descendants, the hunt involves sampling the famous polymath’s papers, paintings, and distant cousins. Contributing Correspondent Richard Stone talks with host Sarah Crespi about what researchers hope to learn from Leonardo’s genes and the new field of “arteomics.” Next on the show, new evidence for poisoned arrows from 60,000 years ago [/doi/10.1126/sciadv.adz3281] complicates our picture of hunting during the Pleistocene. Sven Isaksson [https://www.su.se/english/profiles/i/isak], a professor of archaeological science at Stockholm University, joins the podcast to discuss the discovery of poisonous residues on microliths—the tiny, worked stone points used on arrows and spearheads. These findings could push back the origins of this toxic technology by 50,000 years. This week’s episode was produced with help from Podigy [https://podigy.co/]. About the Science Podcast [/content/page/about-science-podcast] Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

Looking for continents on exoplanets, and math is hard for mathematicians, too

First up on the podcast, the best images of exoplanets right now are basically bright dots. We can’t see possible continents, potential oceans, or even varying colors. To improve our view, scientists are proposing a faraway fleet of telescopes that would use light bent by the Sun’s gravity to magnify a distant exoplanet [/content/article/sun-s-gravitational-lens-could-reveal-alien-planets-surfaces]. Staff Writer Daniel Clery joins host Sarah Crespi to discuss where to aim such a magnificent telescope and all the technological pieces needed to put it together. Next on the show, expert voices columnist and Johns Hopkins University mathematician Emily Riehl [/doi/10.1126/science.aec9014] discusses her recent essay on communication woes in the math community [/doi/10.1126/science.aec9014]. The complex concepts, jargon, and the slow pace of understanding a proof all add up to siloed subdisciplines and potentially more errors in the literature. Alex Kontorovich [https://sites.math.rutgers.edu/~alexk/], a professor in the math department at Rutgers University, also joins to discuss how proof assistant computer programs and machine learning could help get mathematicians all on the same page. This week’s episode was produced with help from Podigy [https://podigy.co/]. About the Science Podcast [/content/page/about-science-podcast] Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]