Headliner: As extreme heat settles in, WPLN environmental reporter Caroline Eggers explains how an NPR/Boston University investigation finds Tennessee and other states have severely undercounted heat-related deaths.Newsmaker: Metro Council Member Sandra Sepulveda makes her case for banning right turns at red lights, plus she shares a look at her Hispanic-majority district and the newly opened Mariposa Park.Tastemaker: A trailblazer in both cardiology and country music, Dr. Cleveland Francis tells stories from his new memoir, “Do My Heart Good: My Odyssey Through Country Music, Medicine, and History.”