Jessica Young
speaker
59 appearances
5 recordings
1 series
first heard Nov 2024
last heard Jan 2025
Jessica Young’s voice in public audio — every appearance, attributed to the second.
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Appearances
And new evidence of canid bones from Alaska supports that theory. Their paper analyzes more than 100 specimens, but the most interesting bone was excavated in 2018 outside of Fairbanks. There, researchers found a single tibia, or lower leg bone, and DNA evidence suggests the bone belonged to some kind of ancient wolf or proto-dog, and dated the bone to 12,000 years ago.
But, I mean, how do we know that these canids weren't just out there hunting salmon themselves? So salmon is not naturally available in big quantities in Fairbanks, which is why researchers think they were probably getting salmon from humans, like proof of domestication, at least for this one ancient wolf.
Yeah, you're one of our favorites.
Tyler Jones, check the facts. Beth Donovan is our senior director. And Colin Campbell is our senior vice president of podcasting strategy. I'm Regina Barber. And I'm Jessica Young.
You're listening to Shortwave from NPR.
We also have cures for our loneliness epidemic.
All that on this episode of Shortwave, the science podcast from NPR. OK, Ari, where do you want to start?
Which is why scientists have given it this funny nickname, Conan the Bacterium, a resilient superhero of the microbial world.
True. Email us, kids. Let us know.
This is Michael Daly, a professor of pathology at the Uniformed Services University, who has studied the Conan bacteria for decades.
Yeah, look, when combined, these three, phosphate, manganese, and peptides, offer astounding radiation protection. The details about this appear in the Proceedings of the National Academy of Sciences, and Michael says this breakthrough means big things for the future.
Yes, we have a very lonely society, and there are a lot of studies out there showing this, including the National Poll on Healthy Aging from the University of Michigan. Now, for six years, the poll gathered household data from older Americans ages 50 to 80 about how lonely they are, loneliness being defined as feeling a lack of companionship.
Yeah. Yeah. One third of older adults. It's a lot. And an outside researcher thinks this could be an undercount. Geriatrician Thomas Cujo at Johns Hopkins University is especially worried about older adults who are, say, homebound or cognitively impaired and may not take part in a poll like this.
Yeah, lead author Preeti Malani wants everyone to think of loneliness as a health problem, like cancer or heart disease, as something that can be treated and prevented. We can actively cultivate human connection.
And there's medical interventions, too, like getting fitted for hearing aids so those who are hard of hearing can connect like we are now through good old-fashioned conversation.
But what's weird is that we humans have supporting cells in our inner ears, too. They just fail to step into the spotlight and take over. And that's true of all adult mammals like mice.
They can be open or closed. And in adult mammals, which can't regenerate hearing, the enhancers are closed. But according to this new research, these switches are on for adult zebrafish, meaning the curtain can be raised for the supporting cells to step forward and do their thing and restore the hearing.
The scientists also found that if you took them out, the zebrafish lose this ability to regenerate hair cells.
It's cool. It's always happening, so we'll be back.
You can hear more of Ari on Consider This, NPR's afternoon podcast about what the news means for you.
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