The astronaut who experienced a medical issue in space last month has identified himself as the sick member of his crew prompting an evacuation from the International Space Station.
Managing the Allowlist
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How does blockchain work?Blockchain records digital information and distributes it across the network without changing it. The information is distributed among many users and stored in an immutable, permanent ledger that can't be changed or destroyed. That's why blockchain is also called "Distributed Ledger Technology" or DLT.
Aston Martin cuts 20% of workforce as losses widen
Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00623-8