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Experimental sodium-metal battery charges in four minutes without lithium.

Chinese researchers have demonstrated an experimental sodium-metal battery capable of charging at a 15C rate, equivalent to roughly four minutes, while using a quasi-solid gel electrolyte to suppress dangerous dendrites. At a slower 20-minute rate, the battery retained 90% capacity after 2,000 cycles. The technology remains laboratory-stage. Its four-minute charging durability has not been demonstrated over thousands of cycles, and larger pouch cells are still at an early stage.

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SEC proposes new rules to make crypto custody easier for investment funds.

The SEC has proposed new crypto custody rules allowing investment advisers and regulated funds, under certain conditions, to hold digital assets themselves or use state-chartered trust companies. The changes could make it easier for professional investment products to offer crypto exposure while imposing specific security requirements. The framework is still only a proposal and will undergo a 60-day public consultation before any final rule is adopted.

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Trump creates a federal “Super Intelligence Force” to coordinate US AI Policy.

Donald Trump has created a Super Intelligence Force, a federal task force led by intelligence director Jay Clayton that will coordinate US policy on advanced AI. It has 120 days to examine risks, opportunities and possible government responses while avoiding what the administration considers excessive regulation. Despite the name, “Super Intelligence” is currently the White House’s official replacement term for artificial intelligence, not a separate new technology.

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Tokens sit between human language and the mathematics of modern AI. They determine how text is represented, how much information a model …