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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
Stay Connected
Support for The Source comes from Texas Mutual Workers' Compensation Insurance.
Support for The Source comes from UT Health San Antonio.
Latest Episodes
  • Katy Padillar Stout is the Democratic nominee for the 23rd Congressional District of Texas
    Katy Padilla Stout on 'The Source'
    Katy Padilla Stout is the Democratic nominee for the 23rd Congressional District of Texas. This is a district that Republicans have held and has been considered a safe Red seat. But after current congressman Tony Gonzales dropped out of the race due to a scandal, and the GOP nomination moved to gun rights activist Brandon Herrera, Democrats are sensing an opportunity to flip the district.
  • Texas drought deepens, straining farms, ranches and water supplies
    Texas is slipping deeper into a prolonged drought, with the latest U.S. Drought Monitor showing nearly the entire state abnormally dry and about 81.8% in drought. Roughly half of Texas is now in severe drought or worse, and about one in five acres is in extreme to exceptional drought.
  • An image that appears in the FRONTLINE documentary ‘Remaking the Middle East: The U.S., Israel & Iran.’
    FRONTLINE and the war with Iran
    The United States and Israel are now at war with Iran. This direct conflict has grown out of decades of simmering hostility but is now erupting, reshaping the Middle East and rattling the global economy. FRONTLINE has produced and is streaming an updated presentation of Remaking the Middle East. From award-winning FRONTLINE filmmakers James Jacoby and Anya Bourg.
  • Brandon Herrera campaigns in 2024 for the GOP nomination for the TX 23rd CD.
    Brandon Herrera on 'The Source'
    Brandon Herrera is the GOP nominee for the 23rd Congressional District of Texas. He is a pro-gun activist and YouTube conservative influencer. He faces Democrat Katy Padilla Stout in the November General Election.
  • As smart devices multiply, so do fears over digital surveillance
    We are living in a time of extreme self surveillance. We carry with us devices that capture our every location, info about our health, and data about our private lives. This information can be saved, processed and used against us by the police, prosecutors and the political state. Digital technology exposes everyone, everywhere, all at once, and we have few laws to regulate it.
  • When the penny dropped for capitalism
    No other phenomenon has shaped human history as decisively as capitalism. It structures how we live and work, how we think about ourselves and others, how we organize our politics. But is capitalism what you think it is? It's rooted in the ideas of private property, self-interest and profit — but it is dependent on the rule of law and state support. We hear the story of capitalism.
  • The child’s cheek shows the characteristic rash associated with measles.
    Measles continues to spread across nation
    Measles in South Carolina’s outbreak grew to nearly a thousand cases last week. The outbreak is part of a wave of measles outbreaks across the country that began last year in Texas. There are other outbreaks now in California, Utah and North Dakota. The vast majority of cases have been among unvaccinated people. The surge in cases is pushing the U.S. dangerously close to losing its measles-free status. Why are we losing the battle against measles?
  • Councilmember Sukh Kaur speaks out
    San Antonio City Council is looking to move forward after a week of internal rifts due to a confrontation between Mayor Gina Ortiz Jones and District 1 Councilwoman Sukh Kaur. The conflict escalated into an 8-1 City Council vote to censure the mayor on Friday.
  • San Antonio Mayor Gina Ortiz Jones honors veterans who work for the city during a ceremony on the steps at city hall on Nov. 5, 2025
    Mayor Gina Ortiz Jones seeks to boost voter participation
    San Antonio Mayor Gina Ortiz Jones is looking to boost voter participation in the city, tighten oversight of area data centers, and push back against new immigration detention facilities.
  • Ron Nirenberg turns the page with new book and new campaign
    Former San Antonio Mayor Ron Nirenberg releases a memoir about his time leading City Hall as he seeks to win the Bexar County judge office as the Democratic nominee. “Nirenberg: The Education of a Texas Public Servant,” is published by Trinity University Press.