[5/21 15:00] AI solves 80-year-old Erdős problem / California Newsom AI worker protection executive order

AI News Flash for May 21, 2026 at 15:00 UTC. Topics: 1. AI solves 80-year-old Erdős problem https://www.scientificamerican.com/article/ai-just-solved-an-80-year-old-erdos-problem-and-mathematicians-are-amazed/ 2. California Newsom AI worker protection executive order https://www.nytimes.com/2026/05/21/technology/newsom-ai-executive-order-california.html 3. Magnificent Seven AI earnings takeaways https://www.reuters.com/business/major-takeaways-magnificent-sevens-ai-fueled-earnings-2026-05-21/ 4. Allbirds AI washing 600% stock surge https://fortune.com/2026/05/21/what-is-ai-washing-greenwashing-layoffs-sustainability/ 5. Hark raises $700M Series A https://techcrunch.com/2026/05/21/hark-raises-700m-series-a-for-its-secretive-universal-ai-interface/