Anthropic cut off access to its Mythos 5 and Fable 5 AI models to comply with new US export controls. Elon Musk became the world’s first trillionaire after SpaceX shares surged in its IPO. The update also covers a CRISPR method that targets “undruggable” cancers and the first working nuclear clocks from Chinese and European teams.

• Anthropic fully cut off its Mythos 5 and Fable 5 models to comply with new US export controls barring their use outside the US.
• Elon Musk became the first trillionaire after SpaceX's IPO share price hit $135, pushing his net worth past $1 trillion—over 3% of US GDP.
• A new CRISPR method targets and destroys cells with a tumor-suppressor mutation found in up to half of all cancers (70-90% of hard-to-treat cases), offering a faster path to treatment than small-molecule drugs.
• Chinese and European teams each independently built working nuclear clocks using thorium-229, solving the laser wavelength problem with different approaches (higher power vs. denser crystal matrix).