© 2026 Texas Public Radio
Real. Reliable. Texas Public Radio.
Play Live Radio
Next Up:
0:00
0:00
0:00 0:00
Available On Air Stations
The Source
Monday-Thursday from noon-1 p.m. on KSTX

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
  • Governor Greg Abbott is calling for the San Antonio electricity market to be opened up to private for-profit power companies. CPS Energy is the largest municipally owned electricity provider in the nation, and each year contributes about half a billion dollars to the city’s general fund. CPS Energy joins us to explain what Abbott’s proposal could mean for your power bill and for funding city programs.
  • San Antonio Councilwoman Marina Alderete Gavito is calling for renewed scrutiny of cybersecurity protections at the city’s municipally owned water and electric utilities following attacks on water systems in Minnesota.
  • Texas history is more than just history. It’s filled with myth— and amnesia—that provides a permission structure which fuels conservative politics. It also has a powerful influence on the nation as a whole. In his book Texas: An American History, Benjamin Heber Johnson shines new light on Texas history—while seeking to balance the dark chapters of Texas history and not letting them overshadow the achievements of the lone star state.
  • Over just the last 50 years, humanity as taken more out of the earth than in all the rest of human history combined. The wounds left behind by this extraction — mines, oil wells, quarries, poisoned rivers, hollowed-out industrial towns — now form the true map of our civilization and our age. What can we learn by confronting these ruins?
  • As record high temperatures continue to rise around the globe this summer, many communities are faced with a common challenge: how to stay safe from extreme heat.In the U.S., extreme heat has claimed more than 21,000 lives since 1999. UT San Antonio researchers are working to better understand extreme heat’s impact and to develop strategies to protect the most vulnerable residents.
  • San Antonio District 10 Councilmember Marc Whyte is rejecting Mayor Gina Ortiz Jones’ call for a citywide vote on San Antonio’s proposed $489 million contribution toward a new downtown Spurs arena.
  • Initially President Trump said the war with Iran would last four to five weeks. Now over five months later there is no end in sight. The war is acting like a tax on the U.S. economy: energy costs are rising, inflation has accelerated, and the federal government is spending tens of billions of dollars on military operations.
  • Should San Antonio have another vote on city funds for Project Marvel? San Antonio Mayor Gina Ortiz Jones says a second vote is needed. She joins The Source to explain why. Also what's her response to Governor Greg Abbott wanting to open the San Antonio electricity market to private companies? And should San Antonio have a moratorium on data centers?
  • Three San Antonio City Council members are calling for a temporary moratorium on applications for new data centers, citing concerns about the rapidly growing industry’s demands on water, electricity and impact on air quality in surrounding neighborhoods.
  • President Donald Trump has spent decades cultivating an image as a master dealmaker. A new book examines the techniques behind that reputation and what others can learn from both his successes and shortcomings.