The Cat’s Meow, Chumash Marine Sanctuary, EV Tires. July 28, 2023, Part 2

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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 mo