In today's episode we talk to the founder of a startup that will have momentous consequences for the whole world if it works: David Kirtley, Founder & CEO of Helion Energy, who is building an actual fusion power plant. Fusion has always been something that was 20 years in the future. Not anymore. The new Helion model, which they're constructing right now, is going to achieve net electricity production.

In the latest episode we talk to one of the great YC insiders, Jared Friedman, who was in the third batch back in summer 2006, as cofounder of Scribd, and who has worked since 2015 as a YC partner. Jared really embodies the spirit of YC. He's incisive, but also a mensch, as you'll notice when you listen to the episode.

Jessica & Carolynn Announce Season 5 of The Social Radars

In today’s episode, we talk to Blake Scholl, Founder & CEO of Boom Supersonic. Building a supersonic airliner sounds hard, and it is: startups often have dramatic ups and downs, but Boom’s are among the most dramatic we’ve heard. His story was a gripping series of last-minute saves.

In today's Social Radars, we talk to Sajith Wickramasekara of Benchling. For Sajith, founder mode means a pervasive feeling of responsibility for everything at the company. Nothing can be bad at Benchling.

In the latest Social Radars, we talk to Jen Herbach of Adventris, which is working on a cancer vaccine. She was in the audience of Brian Chesky's famous founder mode talk, and immediately went home and started changing things.

In this episode we talk to Andy Lapsa of Stoke Space. This startup is literally doing rocket science, because they're building fully reusable rockets. Anyone who meets Andy is struck by the depth of his expertise, and in this company that's what founder mode means: a deep understanding of all the engineering problems.

In this Social Radars episode we talk to Emmett Shear, who told us about an interesting founder mode technique he developed when he was running Twitch. He wanted people there to be able to answer the question "What would Emmett do?" and he found the best way to ensure this was via the weekly all-hands, which he'd spend hours preparing for.