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PODCAST

The Source

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

government

All Episodes

FRONTLINE: Investigating Iran's nuclear program

The Source ·

2026/03/31

FRONTLINE's “Strike on Iran: The Nuclear Question,” is an updated report that is produced with The Washington Post, Evident Media and Bellingcat. The documentary investigates Iran’s nuclear program after the June 2025 strikes. Iran's ability to build a nuclear weapon was the primary justification for the ongoing U.S. Israeli war with Iran.

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Rep. Castro on Trump, the economy and the war with Iran

The Source ·

2026/03/31

One month into the U.S. Israeli war against Iran, and there remain questions about why President Trump decided to launch the attack and what the objectives are. Under the Constitution only Congress has the authority to declare war — but that didn’t happen. San Antonio Congressman Joaquin Castro (D) joins us to answer your questions about the war with Iran.

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48:48

Decoding the Mayan mystery

The Source ·

2026/03/30

The history of the Mayan civilization seemed to be lost forever when Spanish explorers first saw the ruins of the ancient cities in Mexico and Central America. Today with recent decipherment of their writings the story of the Maya can now be told from their perspective.

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Mayor Jones reports back from Taiwan trade trip

The Source ·

2026/03/30

San Antonio Mayor Gina Ortiz Jones is using overseas trade missions to make the case that the city can compete for the industries shaping the next economy. Her latest trip, a March delegation visit to Taiwan, was framed by City Hall as an effort to strengthen bilateral ties, attract investment, and position San Antonio as a landing spot for Taiwanese firms looking to expand in the United States.

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How should San Antonio regulate data center growth?

The Source ·

2026/03/30

The number of data centers in the San Antonio area continues to grow. And District 10 Councilmember Marc Whyte is presenting a nuanced position on the growth as an opportunity for the city’s economy — boosting revenue for CPS Energy and providing a projected $50 million dollars for the city’s general fund. Whyte is calling for managing data center growth to protect the region's water and neighborhoods.

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49:25

From the border wall to the suburbs: Exploring...

The Source ·

2026/03/25

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.

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49:48

The politics of public health from Obamacare to COVID

The Source ·

2026/03/24

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.

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25:01

Did local politics cause Corpus Christi's water crisis?

The Source ·

2026/03/23

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.

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24:50

Defending your backyard against invasive species

The Source ·

2026/03/23

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.

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24:55

Allegations against César Chávez raise hard questions

The Source ·

2026/03/22

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.

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25:05

The war with Iran and the surging price of oil

The Source ·

2026/03/22

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?

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39:06

Why some political scandals sting — and others slide

The Source ·

2026/03/18

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.

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38:44

San Antonio's Barshop Institute to test three...

The Source ·

2026/03/17

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.

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19:31

Katy Padilla Stout on 'The Source'

The Source ·

2026/03/16

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.

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19:28

Texas drought deepens, straining farms, ranches and...

The Source ·

2026/03/16

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.

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39:55

FRONTLINE and the war with Iran

The Source ·

2026/03/15

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.

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Brandon Herrera on 'The Source'

The Source ·

2026/03/15

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.

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40:35

As smart devices multiply, so do fears over digital...

The Source ·

2026/03/12

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.

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49:35

When the penny dropped for capitalism

The Source ·

2026/03/10

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.

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37:28

Measles continues to spread across nation

The Source ·

2026/03/09

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?

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