The Download: Yann LeCun's new venture, and lithium's on the rise

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MIT Technology Review

Yann LeCun left Meta to start a new venture focused on world models rather than large language models, which he believes are the wrong approach for AI. Lithium prices are rising again after recent volatility, with significant implications for battery technology and mining. Trump backed down from plans to take Greenland but claims a deal for rare earth access. Apple is developing a wearable AI pin and planning to revamp Siri into an AI chatbot. Studies show employees disagree with CEOs about AI productivity gains, while measles cases hit a 30-year high in the US.

The Download: Yann LeCun’s new venture, and lithium’s on the rise