This podcast episode celebrates TED's 40th anniversary and explores the organization's mission to spread ideas that can change the world. It discusses TED's evolution from "ideas worth spreading" to "ideas change everything," reflecting the belief in the power of ideas to inspire and create tangible change. The episode also examines TED's shift towards a debate-style format for talks, emphasizing the importance of exploring ideas in a respectful and productive way. Additionally, the episode introduces TED Next, a project aimed at fostering innovation and inspiring the next generation of speakers. The episode concludes by highlighting the Audacious Project, an initiative that supports social entrepreneurs with ambitious ideas to address systemic issues.