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What Is Your Cat’s Meow Trying To Tell You?
Cats have formed bonds with humans for thousands of years. But what exactly is going on in our furry friends’ brains? What are they trying to tell us with their meows? And why did humans start keeping cats as pets anyway?
To help answer those questions and more, John Dankosky talks with Jonathan Losos, professor of biology at Washington University in St. Louis, Missouri, and author of the new book, The Cat’s Meow: How Cats Evolved from the Savanna to Your Sofa.
Read an excerpt of the book at sciencefriday.com.
Researchers Quantify The Navajo Nation’s Water Crisis
In Fort Defiance, one of five main communities situated on the Arizona-New Mexico border in the Navajo Nation, Taishiana Tsosie and Kimberly Belone are standing in a mobile office’s cramped bathroom.
The two researchers from the Johns Hopkins Center for Indigenous Health turn off the lights and hold up plastic bags filled with water from the bathroom sink. Each bag has five small compartments, filled with the same sink water. Where they differ is in the chemicals added to each compartment.
“This is our compartment bag, and we use this and several other chemicals and tablets to test for E. coli in the water,” Tsosie said.
Today, the researchers are testing for harmful bacteria, but they also run separate tests for dangerous metals in drinking water.
To read the rest, visit sciencefriday.com.
Chumash Tribe Champions National Marine Sanctuary
For generations, the Chumash tribal nation have been stewards of a vital marine ecosystem along the central coast of California, bordering St. Louis Obispo County and Santa Barbara County.
The area is home to species like blue whales, black abalone, and snowy plovers. And it’s also an important part of the Chumash tribe’s rich traditions and culture.
Tribal leaders have pushed for decades to designate the area as a national marine sanctuary. Now, the Chumash Heritage National Marine Sanctuary is in the final stages of the approval process, which would make it the first tribally nominated national marine sanctuary in the country.
John Dankosky talks with Stephen Palumbi, professor of marine sciences at Stanford University and Violet Sage Walker, chairwoman of the Northern Chumash Tribal Council, about the importance of this region and their collaborative research project.
Where The Rubber Meets The Road For Electric Cars
You might not give your car’s tires a lot of thought unless you get a flat, or you live somewhere you need to swap in snow tires. But as more people in the US make the switch to electric vehicles, some are finding they have to think about their tires more often. Some EV drivers are finding that their tires wear out more rapidly than they had with traditional internal combustion-driven vehicles—in some cases, 20 percent faster.
The problem has multiple causes. Many EVs are heavier than regular cars of a similar size, which puts more load on the tires. When combined with the almost instant torque provided by electric motors, that can lead to leaving rubber on the road—even when a driver isn’t attempting to burn rubber.
Ryan Pszczolkowski, tire testing program manager at Consumer Reports, joins Diana Plasker to talk about the special engineering that comes into play when the rubber meets the road in an electric car.
Is The Plastic In Your Old Barbie Toxic?
‘Barbie’ is going gangbusters at the box office, and it’s prompted a whole new interest in the iconic, if occasionally problematic, toy doll. If you’ve been moved by the movie to dig your old Barbie out from the attic, don’t be surprised if she looks…different.
The PVC (polyvinyl chloride) toy dolls of the 1950s—and for the next 50 years after that—contained plasticizers that, over time, can degrade, discolor, and even become sticky. And the chemical compounds being released by an old PVC toy might be toxic to your toddler.
Science Friday’s AAAS Mass Media Fellow Chelsie Boodoo is a big Barbie fan. She wanted to find out more about what these old Barbies are made of, and whether we should be worried. So, she turned to Dr. Yvonne Shashoua, a research professor from the National Museum of Denmark. She explains what happens to plastic dolls over time, how museums like hers preserve vintage toys, and even some tips to keep Barbie looking like new. (Hint: make room in the freezer!)
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Transcripts for each segment will be available the week after the show airs on sciencefriday.com.
666: High Energy Cosmic Ray Detected | These Penguins Are The Masters Of Microsleeping
665: COP28 Climate Conference Ends | Why Are Some People Affected By Seasonal Affective Disorder?
664: A Celebration Of The 2023 Christmas Bird Count
663: Surfing Particles Can Supercharge Northern Lights
662: The (Not So) Easy Guide To Getting To Space
663: The Women Astronomers Who Captured the Stars
662: Quercetin May Cause Red Wine Headaches | Worsening Wildfires Are Undoing Air Quality Progress
661: Speaking Multiple Languages Changes The Way You Think
660: Social Connections Keep Us Physically and Mentally Healthy As We Age
661: Women Were Also Skilled Hunters In Ancient Times
658: An AI Leader’s Human-Centered Approach To Artificial Intelligence
659: COP28 Host Had Plans to Promote Oil and Gas | Researchers Detected Cicada Emergence With Fiber-Optics
656: Ralph Nader Reflects On His Auto Safety Campaign, 55 Years Later
654: What’s That Smell? An AI Nose Knows
655: Jane Goodall On Life Among Chimpanzees
654: The ‘Wet-Dog Shake’ And Other Physics Mysteries
657: Ig Nobel Prizes | Stop Flushing Your Health Data Down The Toilet
653: The West’s Wild Horses | Artist Explores History Of Humans Genetically Modifying Pigs
650: Moon Rock Research | Science of Unraveling Sweaters
652: 2023’s Best Science Books For Kids
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