A new space telescope will soon give us an expanded field of view of some of the strangest phenomena in the cosmos. The launch of NASA’s Nancy Grace Roman Space Telescope will initiate this instrument’s contributions to the understanding of black holes, dark matter, and dark energy. It will also further the search for exoplanets. The project’s principal and deputy investigators join us to describe the telescope’s science goals, and astrophysicist Neil DeGrasse Tyson provides his big picture view of the most exciting recent discoveries in astronomy and cosmology.   Guests:  Julie McEnery – Astrophysicist at the Goddard Space Flight Center and senior project scientist for the Nancy Grace Roman Space Telescope.   Jason Rhodes – JPL project scientist for the Nancy Grace Roman Space Telescope, focusing on dark energy, dark matter, and cosmic evolution.   Neil deGrasse Tyson – Astrophysicist and director of New York City’s Hayden Planetarium at the American Museum of Natural History, and author of "Lost in Space: 5,000 Facts for Navigating the Universe".   Anna de Graaff – Astronomer at the Max Planck Institute for Astronomy    You can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support!  Big Picture Science is part of the Airwave Media podcast network. Please contact [email protected] to inquire about advertising on Big Picture Science.  Learn more about your ad choices. Visit megaphone.fm/adchoices

The abrupt defunding of USAID in 2025 caused global shockwaves. The cuts thrust recipient countries who were dependent on foreign aid for medical care into health crises. One area that has been particularly hard hit is Malawi, a country in southeastern Africa where doctors and community organizers are struggling to fill the gaps in essential services left in the wake of the USAID cuts. The loss of local outreach clinics and lack of fuel for ambulances has caused severe delays—and sometimes tragic outcomes—in providing care to mothers and children. A year out from the cuts, we look at how Malawi is rethinking its relationship to foreign aid as it considers how to continue providing vital health services.  In the first of a series supported by the nonprofit Pulitzer Center and in collaboration with Science Magazine, we provide an on-the-ground look at the impact of USAID defunding on health services in key spots across the globe.   Guests:   Catherine Offord – journalist, Science Magazine. Her article, “An Uncertain Path,” appeared in the July 16 issue of the magazine   Voices heard in the show:   Fanizo Simenti – community health worker at Katenje Health Post, Kasungu district   Emily Mvula – former recipient of services provided by USAID MOMENTUM   Issah Omar Nicks – nursing officer overseeing the maternity ward at the Makiyoni Health Center, Salima District   Aran Nkhata – medical clinician in charge of Makiyoni Health Center, Salima District   Flywell Elenesto – cold chain technician for Salima District, Malawi   Sungeni Thole – nurse midwife technician at Makiyoni Health Center, Salima District   Anthony Masamba – MP and chair of The Parliamentary Committee on Health   Show theme by Jun Miyake. Episode image by Thoko Chikondi.  You can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support!  Big Picture Science is part of the Airwave Media podcast network. Please contact [email protected] to inquire about advertising on Big Picture Science.  Learn more about your ad choices. Visit megaphone.fm/adchoices

They are known for holding branches in their paws and gnawing on them like corn cobs. They build lodges and dams which occasionally flood roads. Cute, comical, and considered pests, beavers were nearly hunted to extinction for their pelts before conservation efforts allowed their populations to rebound. Now environmentalists and engineers are reintroducing North America’s largest rodent to drought-prone habitats across the country. As the paddle-tailed animals’ dam-building has revealed itself to be a potent bulwark against climate change-induced water scarcity, the beaver is being hailed as an ecological hero.   Join us as we stomp through soggy meadows getting to know the OG geoengineers. From their water pressure-sensing tails to their intricate branch-weaving, find out why, as our nation’s wetlands disappear, and new federal policies strip protection for many of those that remain, many think that partnership with a wild species could help build ecological resiliency.  Guests:  Leila Philip – Journalist and author of “Beaverland: How One Weird Rodent Made America”  Denise Burchsted – research scientist, and engineer, Keene State College  Clay Frazer – restoration ecologist with Native Range Ecological  Michael Waasegiizhig Price – traditional ecological knowledge specialist at the Great Lakes Indian Fish and Wildlife Commission. He is Anishinaabe and a longtime tribal college educator serving at Leech Lake Tribal College and White Earth Tribal and Community College.  Originally aired July 28, 2025  You can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support!  Big Picture Science is part of the Airwave Media podcast network. Please contact [email protected] to inquire about advertising on Big Picture Science.    Learn more about your ad choices. Visit megaphone.fm/adchoices

Whether in miles or pounds, meters or kilograms, we take daily measure out our lives. But how did these units ever come to be, and why do we want to change them? From light-years to leap seconds, we look at the history of efforts to quantify our lives and why there’s always room for greater precision. Plus, we debate the virtues of staying imperial measurements vs. going metric.   Guest:  James Vincent - Author of Beyond Measure, the Hidden History of Measurement  Featuring music by Dewey Dellay and Jun Miyake  Originally aired March 24, 2023  Big Picture Science is part of the Airwave Media podcast network. Please contact [email protected] to inquire about advertising on Big Picture Science.  You can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support!  Learn more about your ad choices. Visit megaphone.fm/adchoices

Are we alone in the universe? Is there other intelligence out there? COSMIC, the most ambitious SETI search yet, hopes to answer that. We hear updates on this novel signal detection project being conducted on the Very Large Array in the desert of New Mexico. Also, we chat with award-winning science fiction writer Ted Chiang about how he envisions making contact with aliens in his stories, including the one that was the basis for the movie Arrival. And find out why some scientists don’t want only to listen for signals, they want to deliberately transmit messages to aliens. Is that wise and, if we did it, what would we say?   Guests:  Chenoa Tremblay – Postdoc researcher in radio astronomy for the SETI Institute and member of COSMIC science team  Ted Chiang – Nebula and Hugo award-winning science fiction writer, best known for his collections, Stories of Your Life and Others and Exhalation  Douglas Vakoch – Founder and president of METI International, a nonprofit research and educational organization devoted to transmitting intentional signals to extraterrestrial civilizations  Featuring music by Dewey Dellay and Jun Miyake  Originally aired April 3, 2023  Big Picture Science is part of the Airwave Media podcast network. Please contact [email protected] to inquire about advertising on Big Picture Science.  You can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support!  Learn more about your ad choices. Visit megaphone.fm/adchoices

What physical activity gives you joy? Whether it’s walking, running, dancing or swimming, your body evolved to do it. We are made for movement. But there’s a cost, as anyone with a sore neck or aching back knows. From the tiny muscles in our skin, which raise the hair on our arms, to the intricate mix of bone, blood vessels, and nerves in our neck, natural selection has struck a delicate and sometimes wacky balance between utility and form. In this episode, we explore how parts of the body - our muscles, neck and feet - came to be, and what forces prompted the evolution of efficient yet imperfect bodies.  Guests:  Kent Dunlap - Professor of biology at Trinity College in Hartford, Connecticut and author of “The Neck: A Natural and Cultural History”  Bonnie Tsui - Journalist and author of “On Muscle: The Stuff That Moves Us and Why It Matters”  Jeremy DeSilva - Anthropologist at Dartmouth College and author of “First Steps, How Upright Walking Made Us Human”  Featuring music by Dewey Dellay and Jun Miyake  Originally aired June 30, 2025  You can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support!  Big Picture Science is part of the Airwave Media podcast network. Please contact [email protected] to inquire about advertising on Big Picture Science.  Learn more about your ad choices. Visit megaphone.fm/adchoices

Electricity plays an important role in our everyday lives, including allowing our bodies to communicate internally. But some research claims electricity may be used to diagnose and treat disease? Could electric pulses one day replace medications? We speak with experts about the growing field of bioelectric medicine and the evidence for electricity’s healing abilities. Their comments may shock you. Guests: Sally Adee – Science journalist, author of “We Are Electric: Inside the 200-Year Hunt for Our Body’s Bioelectric Code, and What the Future Holds" Samantha Payne – Assistant Professor of Biomedical Sciences at University of Guelph Kevin Tracey – Neurosurgeon and President of the Feinstein Institutes at Northwell Health Descripción en español originally aired June 5, 2023 Featuring music by Dewey Dellay and Jun Miyake Big Picture Science is part of the Airwave Media podcast network. Please contact [email protected] to inquire about advertising on Big Picture Science. You can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support! Learn more about your ad choices. Visit megaphone.fm/adchoices

Earthworms may be small, limbless, and blind but, as Darwin observed nearly 150 years ago, they play a critical role in soil ecology. Darwin’s 19th century insights about the slimy invertebrates are far-reaching, serving as the backbone of modern ecology as a whole. In recent years, scientists are putting their ears to the ground, listening to worms to monitor soil health. Meanwhile, laboratory studies on another kind of worms—flatworms—are providing insights about how memories are stored, and how stem cells self-renew. We get our hands dirty for this episode about the biology and ecology of worms.   Guests:  Philip Ball – science reporter, author of “Beautiful Experiments: An Illustrated History of Experimental Science”   Jacqueline Stroud – soil scientist, University of Warwick, U.K.  Alejandro Sánchez Alvarado  – molecular biologist at the Stowers Institute for Medical Research, whose focus is on stem cells and regeneration  Big Picture Science is part of the Airwave Media podcast network. Please contact [email protected] to inquire about advertising on Big Picture Science.  You can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support!  Learn more about your ad choices. Visit megaphone.fm/adchoices

The Arctic serves as the world’s refrigerator, keeping the planet cool. But temperatures in the Arctic are rising nearly four times faster than the rest of the world and its sea ice is near a historic low. We put out a call to scientists aboard research vessels currently sailing in the Arctic Ocean, and two answered “aye.” Hear our ship-to-shore conversations with them about how warmer temperatures affect life on land and sea. Plus, a biologist who recently returned from the field describes how he inadvertently stumbled upon surprising data during his decades-long study of polar bears.  Guests: Autun Purser – Marine biologist at the Alfred- Wegener Institute and the current Chief Scientist on the Arctic research vessel, the Polarstern  Andrew Derocher – Zoologist at the University of Alberta in Canada who is leading a decades-long study on polar bears of the West Hudson Bay region, in the high Canadian North    Jonathan Nash – Oceanographer, Oregon State University, and member of the GIANT team sailing near Greenland aboard the RRS Sir David Attenborough  Descripción en español Big Picture Science is part of the Airwave Media podcast network. Please contact [email protected] to inquire about advertising on Big Picture Science. You can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support! Learn more about your ad choices. Visit megaphone.fm/adchoices

Another scorching summer has us blasting the AC and grabbing a chilled drink. Air conditioning and refrigeration may beat the heat, but they also present a dilemma. The more we use them, the more greenhouse gases we emit, the hotter the planet becomes, and the more we require artificial cooling.  Can we escape this feedback loop?  We look at the origins of these chilling technologies, tour the extensive chain of cold that keeps food from perishing, and consider how a desert city like Phoenix could not exist without AC. Guests: Nicola Twilley – co-host of the Gastropod podcast, a contributing writer at The New Yorker, and the author of  “Frostbite: How Refrigeration Changed Our Food, Our Planet, and Ourselves” Erik Morrison – Chief cooling engineer at Transaera, Somerville, Massachusetts Stan Cox – Lead scientist at the Land Institute, author of “Losing Our Cool: The Uncomfortable Truths about our Air-Conditioned World” Descripción en español Featuring music by Dewey Dellay and Jun Miyake Big Picture Science is part of the Airwave Media podcast network. Please contact [email protected] to inquire about advertising on Big Picture Science. You can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support! Learn more about your ad choices. Visit megaphone.fm/adchoices