Today on Boston Public Radio:

We opened the lines to get listener reactions to Tom Brady announcing his retirement from football — again.

Art Caplan talked about a new report in JAMA about greed in the U.S. health care system, worsening health outcomes and proposed new federal guidelines on who can give blood to change a longstanding rule that effectively bans male donors who have sex with men. Caplan is the Drs. William F. and Virginia Connolly Mitty Professor and founding head of the Division of Medical Ethics at NYU School of Medicine in New York City.

Art Caplan on BPR | Feb. 1, 2023

Juliette Kayyem joined to discuss the police killing of Tyre Nichols, and the progression of former President Donald Trump’s legal case in Manhattan. Kayyem was an assistant secretary for homeland security under former President Barack Obama, and is the faculty chair of the Homeland Security program at Harvard’s Kennedy School of Government.

Juliette Kayyem on BPR | Feb. 1, 2023

Michael Kirk, director of FRONTLINE’s latest film “Putin and the Presidents,” shared the film’s examination of Russian President Vladimir Putin’s quest for Russian dominance through the lens of multiple American presidencies. Kirk wrote, produced and directed “Putin and the President.” The documentary is now available to stream online.

Michael Kirk on BPR | Feb. 1, 2023

Corby Kummer delved into the much-anticipated Comfort Kitchen opening in Boston, inflation drawing a new generation of bakers to the bread machine and the legacy of Four Loko. Kummer is executive director of the Food and Society policy program at the Aspen Institute, a senior editor at The Atlantic and a senior lecturer at the Tufts Friedman School of Nutrition Science and Policy.

Corby Kummer on BPR | Feb. 1, 2023

Sy Montgomery explained how animals genetically modify themselves to adapt to life in the city, and why wildlife advocates are urging regulators to do more to protect cephalopods. Montgomery is a journalist, naturalist, author and a Boston Public Radio contributor. Her latest book is “The Hawk’s Way: Encounters with Fierce Beauty.”

Sy Montgomery on BPR | Feb. 1, 2023

We opened the lines to hear from listeners about how often they shower.