Google co-founder Sergey Brin on leaving retirement to work on AI - https://news.ycombinator.com/item?id=37226292 - Aug 2023 (25 comments)

Back at Google Again, Cofounder Sergey Brin Just Filed His First Code Request - https://news.ycombinator.com/item?id=34645311 - Feb 2023 (16 comments)