Mark Zuckerberg is said to have started work on Koolau Ranch, his sprawling 1,400-acre compound on the Hawaiian island of Kauai, as far back as 2014.
It is set to include a shelter, complete with i… [+11540 chars]
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Tech billionaires seem to be doom prepping. Should we all be worried?
Posted on October 9, 2025 at 