© 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
  • In the new book “Something Between Us: The Everyday Walls of American Life, and How to Take Them Down” a cultural anthropologist examines the social and political divides in the U.S., examining how physical and social barriers like gated communities, massive trucks, and targeted media create separation — and isolation—and looks for how to restore communal caretaking and a more inclusive society.
  • The last three presidents — Barack Obama, Joe Biden and Donald Trump — have all had to deal with health care in America. And along the way, they've clashed with how politics works in Washington D.C. This created today’s environment where the understanding of science is scorned, medical disinformation thrives and the nation could be unprepared for the next health crisis.
  • Corpus Christi could face a water emergency in the coming months. So how did this coastal city end up in such a precarious position? Drought is a major part of the story. But there is also a growing question about whether years of local political conflict and delayed decisions helped deepen the crisis.
  • Invasive species pose a serious threat to Texas landscapes and ecosystems. Ashley Morgan-Olvera of the Texas Invasive Species Institute says homeowners can make a real difference by learning to identify harmful non-native plants and animals and removing them early.
  • New allegations that César Chávez sexually assaulted women and girls, including minors, have triggered a fast and painful reckoning over one of the most celebrated figures in Mexican American and labor history.
  • The U.S. Israeli war with Iran has caused a major disruption to the global flow of oil. The price of crude has jumped to over $100 a barrel. But the question has been, is this a short-term problem or will this war cause the destruction of key oil production sites in the Middle East and cause long term higher prices? And can Texas oil producers meet the moment?
  • When it comes to politics, it used to be bad headlines could torpedo a public figure. But today politicians appear to be armored in Teflon— nothing sticks. So scandals are less likely to end a career. Why is that? That shift is the focus of "Scandal: Why Politicians Survive Controversy in a Partisan Era" by University of Houston political scientist Brandon Rottinghaus.
  • Three drugs that are already approved for people and are on the market — rapamycin, semaglutide and dapagliflozi — could help pick the lock on living longer and healthier. The San Antonio Barshop Institute for Longevity and Aging Studies is, for the first time, looking at these drugs to evaluate their repurposing for delaying aging.
  • 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 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.