July 17, 2026

Arun Rath is guest hosting today!

We talk briefly with Mathew Barlow, a Professor of Climate Sciences at Umass Lowell, about this week’s wildfire smoke & why the sky turned yellow.

GBH’s Renuka Balakrishnan joins with Emily Schario from The B-Side for ICYMI. They’ll talk about the best local swimming pools, the 22nd annual Sand Sculpting Festival on Revere Beach, and cyclosporiasis ruining summer salad season.

Why has the vinyl record endured? And what’s the value of physical media in an era of online disinformation? Arun talks with Joan Donovan from the Critical Internet Studies institute, this week with Tony Goddess from Mystery Train Records in Gloucester.

Arun talks Indigenous history with Aquinnah Wampanoag singer/songwriter Thea Hopkins & Cerise Lim Jacobs from White Snake Projects, around a new interactive freedom trail experience for America 250.

First up, Edgar interviews Dr. Jim Faust about his nonprofit Adam’s Parachute, bringing people suffering from substance addiction into the world of fly fishing. He’ll join alongside GBH report Craig LeMoult ahead of Craig’s forthcoming reporting.

Then, the grocery aisles are packed with all different options for salt. Table, iodized, sea, Celtic, gray, pink Himalayan – does it matter which you use? We get some consult from Dan Souza from America’s Test Kitchen.

Lastly, Edgar brushes up on the history of the toothbrush with Dr. Scott Swank, curator at the National Museum of Dentistry in Baltimore.

First up, we're airing Edgar’s conversation with MIT physicist Pablo Jarillo-Herrero. Pablo tries to explain his research in the field of twistronics in the time it takes to finish a cone of soft serve ice cream. There’s a video version of the conversation also airing today on the GBH YouTube channel.

Then, it's another round of Four Things To Know with Gal Tziperman Lotan from the GBH Daily newsletter.

Lastly, we're opening up phone and text lines for “Ask the Dog & Cat behaviorist,” with Rachel Geller from All Cats All the Time and Kate Bigger from High Fidelity Dogs.