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Screenshot: Fox News

Tucker Carlson — the top-rated host in cable news, who's rumored as a possible GOP presidential candidate in 2024 — told the "Ruthless" podcast he has no plans to run.

What they're saying: "Oh, God, come on!" Carlson told the hosts. "That seems like a fun job!" [Laughter] "No! No!"

Carlson said he has known and talked to every president for about 30 years: "I can't think of any one whose life was improved ... I guess if I was the last person on earth who could do it. But that seems pretty unlikely that I would be that guy — you know what I mean? ... I'm a talk show host; I enjoy it."

Ben Smith, in a fascinating column for the New York Times, reports that while condemning journalists on the air, Carlson has been a source for many reporters on Trumpworld and Fox internal politics:

I won’t talk here about any off-the-record conversations I may have had with him. But 16 other journalists (none from The Times; it would put my colleagues in a weird position if I asked them) told me on background that he has been, as three of them put it, "a great source."
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Go deeper

Study: Cost of carbon emissions measured in lives lost is high

Data: Our World in Data; Chart: Axios Visuals

Adding projected heat-related deaths into cost-benefit analysis of federal rules would tilt policymaking in favor of more aggressive carbon emissions cuts, a new study finds.

Why it matters: The social cost of carbon helps determine the outcome of cost-benefit analyses that underpin federal regulations. Adding in global warming's potential to cause more heat-related fatalities would tilt the policy calculus from supporting a gradual phaseout of emissions starting in 2050, to fully decarbonizing by the same year.

Updated 1 hour ago - Sports

In photos: Tokyo Olympics day 6 highlights

An underwater view of swimmers including Team USA's Caeleb Dressel (R) in the final of the Olympic Tokyo Games men's 100m freestyle on July 29. Photo: François-Xavier Marit/AFP via Getty Images

There's been plenty of Olympics drama on day six of the Tokyo Games Thursday — notably China's women's swimming team beating the U.S. and Australia in the record-setting 4x200-meter freestyle relay.

The big picture: Katie Ledecky helped the U.S. win silver, which also beat the previous world record smashed by China's team. Team USA grabbed two more swimming gold medals, when Caeleb Dressel won the men's 100m freestyle and Bobby Finke triumphed in the first men's Olympic 800m freestyle.

Updated 2 hours ago - Sports

Olympics dashboard

Team USA's Simone Biles during the women's team final on day four of the Tokyo 2020 Olympic Games at Ariake Gymnastics Centre on Tuesday in Japan. Photo: Fred Lee/Getty Images

🤸🏾‍♀️: Simone Biles reacts to "love and support" after withdrawing from all-around gymnastics and team finals, citing her mental health

🏊‍♂️: Caeleb Dressel wins gold in men's 100m freestyle —Bobby Finke wins gold in first men's Olympic 800m freestyle

📷: In photos: Tokyo Olympics day 6 highlights

🗓: The Olympic events to watch today

🎾: "This one sucks more than the others," Naomi Osaka says on upset loss

🏃‍: Female Olympians push back against double standard in uniforms

Go deeper: Full Axios coverage - Medal tracker