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The Source
Monday-Thursday from noon-1 p.m. on KSTX
Hosted by David Martin Davies

The Source is a daily, one-hour call-in talk program that gives listeners in San Antonio the opportunity to call and connect with our in-studio guests and city-wide audience.

The Source seeks to give life, context and breadth to the events and issues affecting San Antonio by bringing newsmakers and experts to the public, and highlighting the people being affected by the news of the day.

The show is hosted by veteran journalist David Martin Davies.

Tune in to The Source for insightful discussion and analysis on topics that matter to residents of the Alamo City.

Contribute to the conversation:

  • Call or text during the live show at 833-877-8255.
  • Leave a voicemail at 210 615-8982 anytime. Submissions may be played on-air.
  • Email comments to thesource@tpr.org.
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Support for The Source comes from Texas Mutual Workers' Compensation Insurance.
Support for The Source comes from UT Health San Antonio.
Latest Episodes
  • Politicians, activists, and community members rally outside Governor Kathy Hochul's office in Manhattan, New York, on April 30, 2026. The ''Tax The Rich'' rally is organized by the Democratic Socialists of America, with participants urging Governor Hochul to increase taxes on the wealthy before the yearly state budget is passed.
    Who are the Democratic Socialists of America and what do they want?
    The Democratic Socialists of America are winning elections across the nation - including in San Antonio. There are three members of the progressive party on City Council. The Republican Party is calling the DSA "communists." DSA supports universal health care, benefits for workers, opposition to billionaires and stopping data centers.
  • New book traces Lone Star Beer’s complicated San Antonio history
    Lone Star Beer has marketed itself as a Texas tradition dating to 1884, but a new book argues the familiar brand grew from two distinct San Antonio breweries operating in different eras.
  • Texas investigation finds thousands of arrests and citations involving young students
    Why are Texas school children as young as 10 years old ending up in trouble with the law? Data shows how districts across the state are arresting and citing children for common misbehavior. The children are left with lasting trauma as the Legislature rejects bills to raise the age of criminal responsibility and floods schools with even more police.
  • Screwworms, ticks and mosquitoes: Are parasites misunderstood?
    The New World screwworm is back in Texas. The lone star tick is on a tea. And the air is thick with blood-sucking mosquitoes. These are all parasites, and they are aggressively on the hunt for their next victim. We share the planet with these creatures, and we need to understand them to protect ourselves. Are they the villains of the animal kingdom or are they misunderstood?
  • The dangerous bargain of jailhouse informant testimony
    The jailhouse informant can have quite an influence on the outcome of a trail. Frequently prosecutors rely on the accounts of prisoners who happen to hear incriminating claims of a defendant on trial. However, sometimes their testimony helps convict an innocent man in an effort to get a sweetheart deal. Investigative reporter Pamela Colloff tells the story of a classic jailhouse snitch and the lives he destroyed in her new book "Catch the Devil."
  • 'People Get Ready': Protest Songs
    New generations of Americans are taking to the street in protest, demanding change and accountability. And they are discovering what protestors of the 1960s and '70s found out— protesting is hard, frustrating and requires sacrifice. But protest songs can help. Songs demanding freedom and justice go back generations and are also being composed today. We hear from Stephen Stacks about his new book The Resounding Revolution: Freedom Song After 1968.
  • Photo by Josh Sorenson from Pexels CC0: https://bit.ly/34mjB5F
    The evolution, impact of drums in modern music and society
    From jazz to present-day pop, drum kits make up one of the most transformative musical inventions. In his book "Kick It," musician, professor and author Matt Brennan dives into the history of drums and drummers, and their impact on both creative culture and society as a whole.
  • A still from Prince's video for "Let's Go Crazy."
    1984: The last great year of pop
    Michael Jackson thrilled, Madonna wowed, Prince had doves cry and Lionel Richie couldn’t slow down: it was 1984. This was a year the changed the music industry and American culture. And it was the last great year for American pop music.
  • The epic sci-fi summer of 1982
    'ET,' 'Star Trek,' 'Wrath of Khan,' 'Blade Runner,' 'Poltergeist,' 'The Thing' — these are just some of the now classic science fiction films that came out in the summer of 1982. What was it about that moment in Hollywood that made it open to fresh ideas and high concept films and what would it take to do it again?
  • A Schumarcher Crossing, Guadalupe River sign is tilted due to heavy rainfall that caused flooding on July 4, 2025.
    Community healing one year after the July 4 flood
    When the July 4 flood tore through the upper Guadalupe River, ripping apart neighborhoods and destroying homes, the Community Foundation of the Texas Hill Country stepped up by helping families find shelter and new homes. How will Kerrville celebrate the Fourth of July on what will be the nation's 250th birthday — while also commemorating the lives lost one year earlier?