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Science Friday

Science Friday and WNYC Studios

Science Friday

Science Friday

Brain fun for curious people.

Podcast Episodes

The Science Behind Third-Trimester Abortions

Leading up to the November election, Science Friday is covering top science issues on the ballot. For voters, those top issues include abortion.

Since the Dobbs ruling overturned Roe v. Wade in June 2022, many states have curtailed access to abortion, and 13 states have a total abortion ban.

The election season in particular, there’s been a focus on abortions in the third trimester of pregnancy. Some of the political rhetoric is inflammatory and false. But even among politicians who support abortion rights, there’s a tendency to deflect attention away from these procedures later in pregnancy.

Though third trimester abortions are rare, they make up about 1% of abortions in the United States and are often the most stigmatized. They are legal in only a small number of states, and just a fraction of providers perform them.

To better understand the real science behind abortions later in pregnancy, guest host Sophie Bushwick talks with Dr. Katrina Kimport, professor of obstetrics, gynecology & reproductive sciences at the University of California, San Francisco; and Dr. Cara Heuser, a maternal and fetal medicine physician who specializes in high risk pregnancy and complex abortion care, based in Salt Lake City, Utah.

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How Aging Water Systems Are Pushing Sewage Into U.S. Homes

Walter Byrd remembers the first time sewage came bubbling out of his toilet like it was yesterday.

“It was just pumping up through there,” Byrd says. “One of the bathrooms was so full of waste, at least 4 inches high in there. It smelled just like a hog pen.”

He sopped up the murky, foul-smelling water and doused the floor with bleach. But the sewage kept coming. On rainy days, it overflowed from drainage ditches into his yard, carrying wads of toilet paper and human waste.

The eight-bedroom home in Cahokia Heights, Illinois, had been a source of pride for Byrd when he first built it in 1996. He spent a lot of time outside, caring for his vegetable garden and watching wildlife wander through the backyard. But trying to stop the sewage backups quickly became his main focus, consuming countless hours and thousands of dollars of his savings.

“It was a dream house, until the floods came,” says Byrd, now 67. “That house broke me down.”

Read the rest at sciencefriday.com.

Transcript for this segment will be available after the show airs on sciencefriday.com.

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Did Dinosaur Flight Evolve More Than Once? | Biodiversity’s Biggest Event Is Underway

Some paleontologists argue the ancient footprints found in South Korea show flight may have evolved in multiple dinosaur lineages. And, COP16 will tackle questions like who should profit from non-human DNA, and who is responsible for financing critical conservation projects.

Do Fossil Prints Show Dinosaur Flight Evolved More Than Once?

Researchers studying tracks fossilized in Cretaceous-era lakeshore mud in what is now South Korea argue this week in Proceedings of the National Academy of Sciences that the dinosaur footprints are “indirect evidence of pre-avian aerial behavior” in a tiny microraptor.

The tracks, which belong to a sparrow-sized theropod related to Tyrannosaurus rex, are spaced far enough apart to indicate that the tiny dino was moving across the mud very quickly. That speed, the researchers argue, is faster than the animal should have been able to go just by running with its hindlimbs. However, if flapping wings were added into the equation to give a power boost, the spacing might make sense.

If the microraptor did, in fact, have flight-capable wings, that would mean that the ability to fly may have evolved in multiple lineages of dinosaurs, not just the descendants of Archaeopteryx we see as modern birds. Other researchers are not convinced of the analysis, arguing that the tracks may not all have come from the same individual at the same time.

Jason Dinh, climate editor for Atmos, joins guest host Sophie Bushswick to talk about the debate, and other stories from the week in science, including an archeological find of medieval-era Silk Road cities in the Uzbek mountains, breathing differences in people born with the inability to smell, and the surprising ability of hornets to hold their liquor.

Biodiversity’s Biggest Event Is Underway In Colombia

From now until November 1, bureaucrats from nearly every country in the world will be gathered in Cali, Colombia, for COP16, better known as the United Nations biodiversity summit. This “conference of the parties” comes together about every two years to deliberate on the biggest issue in conservation science: how to stop ecological collapse.

At the last summit, COP15, nearly every country agreed to a deal to halt biodiversity loss by 2030. This year’s conference will take a temperature check on how nations are doing in their quest to meet this goal (spoiler alert: not well).

Also on the agenda are the questions of who should profit from non-human DNA, and how a $700 billion funding gap for conservation work can be filled. Joining guest host Sophie Bushwick to parse through these big ideas is Benji Jones, environmental correspondent for Vox based in New York.

Transcripts for each segment will be available after the show airs on sciencefriday.com.

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

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How Do Animals Understand Death?

Throughout history, humans have given a lot of thought to death. We’ve grappled with our mortality, created elaborate burial rituals, and contemplated how best to mourn the loss of a loved one.

But what about other animals? How do they understand death? Scientists have begun looking at this question more closely in the last two decades.

For example, chimpanzees have a wide variety of responses to death based in part on their relationship with the deceased. Possums put on elaborate displays to fake their own deaths. Ants can tell another ant is dead by the chemicals it omits, but have no concept of what death actually means.

SciFri producer Kathleen Davis talks with Dr. Susana Monsó, associate professor of philosophy at the National Distance Education University in Spain and author of Playing Possum: How Animals Understand Death.

Transcript for this segment will be available after the show airs on sciencefriday.com.

Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

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