[4/21 01:00] Apple names John Ternus CEO, Cook becomes executive chairman / Korea KOSPI record high on AI optimism

AI News Flash for April 21, 2026 at 01:00 UTC. Topics: 1. Apple names John Ternus CEO, Cook becomes executive chairman https://www.reuters.com/technology/john-ternus-become-apple-ceo-tim-cook-become-executive-chairman-2026-04-20/ 2. Korea KOSPI record high on AI optimism https://www.bloomberg.com/news/articles/2026-04-21/south-korean-shares-refresh-record-as-ai-optimism-extends 3. NUS Paired Protein Language Model published in Nature Communications https://phys.org/news/2026-04-ai-protein-pairs-insights-disease.html 4. Missouri AI regulation bills stall under federal pressure https://www.wgem.com/2026/04/20/missouri-ai-regulation-bills-stall-amid-federal-pressure/ 5. Sparks Police Nevada deploys AI assistant for non-emergency calls https://www.kolotv.com/2026/04/20/sparks-police-roll-out-ai-assistant-help-with-non-emergency-calls/