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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.
Ways To Subscribe
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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
  • EPA cuts its CO2 rule
    More than a dozen health and environmental groups are suing the Environmental Protection Agency over its rollback of a rule that fought climate change. The “endangerment finding”, states that the buildup of heat-trapping pollution in the atmosphere endangers public health. The rollback is widely seen as a major setback to efforts to combat the climate crisis.
  • The contaminated carpet cover-up
    How did PFAS chemicals, once used in popular stain-resistant carpets, end up in the water and environment in parts of Georgia, Alabama and South Carolina? FRONTLINE, The Associated Press, The Atlanta Journal-Constitution, The Post and Courier and AL.com investigate what happened with these forever chemicals and the ongoing health impacts.
  • Does DEI make America great?
    The current right-wing view is that DEI is bad for America. It’s been banned from Texas and national public policy. Diversity, equity and inclusion make up an idea to promote the fair treatment and full participation of all people, particularly those from underrepresented or marginalized groups. So what does the evidence tell us about DEI? And how has it helped business, education, justice and democracy?
  • Sizing up key races in the Texas primaries
    Early voting kicks off in Texas for the March 3 political primaries. The big races to watch are in both major parties for U.S. Senator. Who will the Republicans and the Democrats pick for their nominees? And what’s happening down ballot? Is there a blue wave coming in November?
  • Activists celebrate after relocating the Pride flag to the original pole, while people gather at the Stonewall National Monument, where the LGBTQ+ rights movement was born, to raise a Pride flag after authorities removed it from the Greenwich Village site in New York City, U.S., February 12, 2026.
    Why Trump is trying to rewrite American history
    Recently the slavery exhibit was removed at Independence National Historical Park, The Pride flag was removed at Stonewall National Monument and at the Smithsonian references to President Trumps impeachments were taken down. We hear from Jason Stanley, the author of “Erasing History – How Fascists rewrite the Past to Control the Future.”
  • Bexar County Judge Peter Sakai faces former San Antonio Mayor Ron Nirenberg in the Democratic Primary in 2026
    Sakai and Nirenberg to lay out their vision for Bexar County
    The race for the Democratic nomination for Bexar County judge is on. Former Mayor Ron Nirenberg joins us for the first half hour. He's followed by incumbent County Judge Peter Sakai. We’ll hear from each candidate separately about his vision for Bexar County, Project Marvel, economic development and more.
  • An Aqui Vote Here sign at the Guerra branch library in San Antonio, Texas, USA, on February 20, 2024.
    Trump's threat to nationalize the midterm elections
    The polls look grim for Republicans heading into the midterms — and recent special elections look even worse. President Trump has reacted by calling for the Republican party to take over the elections entirely. Advocates for free and fair elections are calling this a warning sign. What could happen and how can we protect our elections?
  • The entrance gate for U.S. Immigration and Customs Enforcement's (ICE) South Texas Family Residential Facility's outside Dilley.
    Life inside the ICE Dilley detention center
    Conditions inside the family immigration detention facility in Dilley, Texas are drawing renewed scrutiny as detainees, attorneys and advocates describe shortages in medical attention, inadequate and substandard food and water, and serious mental-health strain — allegations that federal officials and the private operator dispute.
  • At least a hundred students walked out of O'Connor High School on Friday, Jan. 30, 2026 to protest against the recent actions of Immigration and Customs Enforcement. They walked to the intersection of Bandera and Riggs Road carrying signs and chanting.
    Can Texas crack down on anti-ICE student protests?
    Texas state leaders are threatening sanctions against school districts and disciplinary action against educators after a wave of student walkouts protesting federal immigration enforcement.
  • Venezuela one month after Maduro's capture
    A month after the U.S. raid and capture of then-President Nicolas Maduro upended Venezuela, the initial shock has given way to a mix of uncertainty, hope and disappointment. Maduro's government remains in power. Donald Trump said he’s the acting president. There are no signs of new elections. The economic collapse continues. FRONTLINE PBS investigates what life is like now in Venezuela.