https://techcrunch.com/2020/07/29/extra-crunch-live-join-our-qa-tomorrow-at-noon-pdt-with-y-combinators-geoff-ralston/ > From Airbnb to Zapier, and Coinbase to Instacart, many of the tech world’s most valuable companies spent their earliest days in Y Combinator’s accelerator program. > Steering the ship at Y Combinator today is its president, Geoff Ralston . We’re excited to share that Ralston will be joining us on Extra Crunch Live tomorrow at noon pacific.