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Trump administration wants nuclear startups to use plutonium for their reactors

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For decades, the U.S. has had a plutonium problem. Around 100 tons of the stuff was made during the Cold War to go into powerful atomic bombs. But as nuclear stockpiles were dismantled, the government had to store the radioactive material in high-security facilities.

Now it wants startups to help get rid of some of it.

The Department of Energy said Tuesday it has selected five nuclear startups to enter into negotiations with the government to receive a portion of the plutonium, which could potentially be used to power a new generation of nuclear reactors. The Department of Energy previously identified 34 tons of plutonium for disposal.

The five startups include Oklo, Standard Nuclear, Shine Technologies, Flibe Energy, and Exodys Energy.

Energy Secretary Chris Wright was previously on Oklo’s board, but he resigned when he joined the administration and said he has divested his shares. Sam Altman was Oklo’s board chair following its merger with his acquisition company, AltC; Altman resigned the position last year.

While plutonium does exist in nature, it is more typically a by-product of bombarding non-fissile uranium with neutrons. Once formed, that isotope of plutonium has a half-life of 24,000 years, meaning the government can’t just wait it out.

Oklo is developing a reactor that can run on traditional uranium fuel as well as plutonium. The plutonium would help the company fuel its first reactors. Exodys Energy is also developing a reactor that can operate using some plutonium as part of mixed oxide fuel, or MOX, which blends uranium with plutonium. Flibe Energy is working toward a reactor that would run on plutonium and other by-products of fission reactors.

MOX is currently produced in France, and while the U.S. had plans to make it in South Carolina, the first Trump administration canceled the project after it blew through budgets and timelines. One of Oklo’s partners in the project, U.K.-based Newcleo, said it intends to build its own MOX fuel fabrication facility nearby.

Not everyone is thrilled with the plan, though. Since the plutonium came from nuclear weapons, the security concerns are significant. “Countries have tried this before, and they concluded that, as nice as it would be to use that plutonium as fuel, it’s really just a liability and we need to dispose of it permanently,” Scott Roecker, a vice president at the Nuclear Threat Initiative, told the New York Times.

For the startups, the next step is to enter into advanced negotiations with the government over security and the transportation of the plutonium. 

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Planned Amazon data center could become the biggest climate polluter in the U.S.

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As part of a planned data center in Pecos County, Texas, Amazon is investing in an on-site power plant that could become the largest source of climate pollution in the United States, according to The New York Times.

The NYT says the plant would burn natural gas and is permitted to release 33 million tons of carbon dioxide per year — more than any other power plant in the U.S.

In a statement, an Amazon spokesperson confirmed that the data center will “be powered by new on-site generation that won’t raise electricity costs for Texas families.” (Data centers face growing political opposition for a number of reasons, including their effect on electricity costs.)

AI has already had a significant impact on Amazon’s carbon emissions, which it reported were up 16% last year — the wrong direction for a company that pledged to eliminate its carbon emissions by 2040. And that could get worse as Amazon and tech companies back the development of huge natural gas plants to support their power-hungry data centers.

The Amazon spokesperson said, “The world looks different now than when we co-founded the climate pledge,” while also claiming, “Our commitment hasn’t changed.”

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OpenAI acquires presentation startup NextSlide

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NextSlide recently announced that it’s joining OpenAI, with the presentation startup’s team members now working on ChatGPT.

The NextSlide website currently displays a note from founder Ahmed Beshry describing the startup’s product as one “that could turn prompts, notes, documents, or research into a polished, editable presentation.”

The ultimate goal, Beshry said, was “to make visual communication more accessible and help more people express their ideas clearly.” So by joining OpenAI, the team will “continue pursuing that same mission: building AI products that help people create, communicate, and turn their ideas into meaningful work.”

The financial terms of the deal were not disclosed. In a note on LinkedIn, Beshry said the announcement is coming “a few months late,” as the acquisition took place “earlier this year.”

Beshry was previously a co-founder at Caper AI, a smart cart/cashier-less checkout startup acquired by Instacart in 2021.

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X replaces ‘misaligned’ revenue sharing program with Original Content Rewards

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X, the social media platform now owned by Elon Musk’s SpaceX, is shaking up how it pays influencers and creators.

In announcing the change, the company said it will be winding down its existing Revenue Sharing program and replacing it with something called Original Content Rewards. X will stop accepting new Revenue Sharing participants, while existing participants will continue earning money through September 7.

Then, starting on September 8, they’ll be able to apply for the new program. Participants will still need to subscribe to one of X’s Premium tiers, and there will be qualifying thresholds for follower count (500 verified followers) and impressions (500,000 Home Timeline impressions from verified users in 90 days), but it sounds like the big change is the emphasis on originality. 

What counts as original content? X said it can include original reporting and analysis, photos and videos created by the poster, or memes and graphics they’ve designed themselves. Commentary also counts, but “if your content regularly incorporates material created by others, you’ll need to contribute meaningful original value for it to qualify under our original content guidelines.”

The company also included examples of posts that won’t count as original, such as those just copied over from another account, downloaded from one account and re-uploaded to your own, or reposting content “without meaningful transformation.”

This announcement follows repeated attempts by X to reform the Revenue Sharing program, for example reducing payments to aggregators and “clickbait” accounts in April. But these efforts have also prompted complaints from popular accounts profiting from the current system; Musk even reversed some of those changes (giving a creator’s local audience more weight when calculating payouts) after a backlash.

In a post about the new changes, X’s Allegra Jacchia wrote that the existing program “had reached a point where its incentives were misaligned.”

“Creators should be focused on bringing net new content to the platform instead of maximizing payouts,” she said. “We could have kept adding more rules and exceptions, but ultimately the better decision was to start fresh and build a program designed from day one to reward originality.”

Jacchia added that X be “continue refining the program, improving our models, and raising the bar over time.”

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