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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
  • Country music's Possum and First Lady: Why George Jones and Tammy Wynette still captivate us
    The relationship between George Jones and Tammy Wynette, two of country music’s biggest stars, is one of the most tumultuous and legendary in the genre’s history. But it's also been largely misunderstood. Podcaster and author Tyler Mahan Coe sets the record straight in "Cocaine & Rhinestones."
  • "A Trip to Mars" (1910) is a significant early science fiction film Produced by Thomas Edison, A "A Trip to Mars," revolves around a group of scientists who build a spacecraft capable of traveling to Mars., where they encounter alien civilizations and strange landscapes.
    When Mars mania grabbed America
    The race is on to get humans to Mars. But what will they find? Not little green men, despite that’s what many believed about the red planet. In the early 1900s it was thought that Mars was inhabited and was home to a utopian society in the grip of a planet-wide drought. How did Mars mania grip the nation, influence pop culture and give us cause to stare into the night sky and wonder?
  • How corporations get rich off America’s poor
    Poverty is big business in America. The federal government spends about $900 billion a year on programs that impact poor Americans, including antipoverty programs like Medicaid, affordable housing and subsidies. There is a vast web of entrenched companies that profit from regulating the lives of the poor with business models that depend on exploiting low-income Americans. The new book Poverty for Profit explains.
  • Why Brains Need Friends
    How loneliness kills
    Headlines have made clear that we are in a crisis of loneliness, but the conversation has yet to explore how social isolation impacts the body and mind on a cellular level. We are animals that need community and unity. We hear a neuroscientist’s guide to boosting your brain health by living a more connected life.
  • Blood cholesterol testing. Home cholesterol testing card, showing a high cholesterol reading (red). The patient's finger was pierced to produce a drop of blood, the blood was soaked into the test area (upper right) and the result displayed in the form of a coloured stripe. The amount of saturated (mostly animal- derived) fats in the diet is the main cause of high blood cholesterol levels. High levels may result in obesity and coronary heart disease. A reduction through change in diet is required to lower these levels.No use: BBC, Pearson, Oxford University Press, Springer Nature, Dorling Kindersley, Cambridge University Press & Assessment, New Scientist, Bonnier Publications, John Wiley & Sons, The Lancet, BMJ
    New cholesterol guidelines call for earlier action to prevent heart disease
    Updated for the first time in six years, clinical guidelines for screening and managing cholesterol now recommend earlier screenings for those with a family history of heart disease. Cardiovascular disease remains a leading cause of death, but experts say much of it is preventable.
  • A wing and a prayer: Saving birds in a time of decline
    There has been a catastrophic decline in the population of North American birds. The continent has lost approximately one-third of all birds since 1970. But certain groups like raptors and waterfowl have recovered significantly due to targeted habitat restoration and dedicated conservation funding.
  • Chips, biotech, quantum, and drones: Can America innovate security and shared prosperity?
    It’s an essential insight about our world: Innovation drives economic growth. For the U.S. to thrive, it must keep innovating. But how, and in what areas? A new book co-authored by MIT faculty members focuses on key areas where technology advances can drive the economy and support national security. Semiconductors, biotechnology, drones, quantum computing, and advanced manufacturing — are all built on U.S. know-how, but these are also areas where the country could be falling behind.
  • Edwards Aquifer rises after April rain, but drought remains for South Texas farmers
    Because of the ongoing drought water levels in the Edwards Aquifer have been dipping to some of the lowest in history. Yet development growth continues, and big thirsty industry continues to move into the area. Meanwhile area agriculture is looking down the barrel of dropping wells and few options.
  • Immigration attorney, Kate Lincoln Goldfinch with a father (Eduardo) and his young daughters—days after Eduardo's wife was arrested through "expedited detention." Immigrations rights press conference on June 2, 2025
    Paths, Barriers and Possibilities: Immigration in America
    For over a year the Trump administration has been executing its mass deportation agenda. Data shows that the Immigration and Customs Enforcement dragnet has scooped up mainly non-criminal immigrants. Recently the National Council of Jewish Women San Antonio organized the live panel discussion: “Paths, Barriers and Possibilities: Immigration in America” for a conversation about the impact of Trump’s mass deportation policies.
  • Texas restaurants are being squeezed by rising costs and lack of labor
    Texas restaurants are facing a new round of financial strain, and industry leaders say immigration enforcement is making a difficult economy even harder to navigate.