Prince Harry and Meghan have joined a diverse group, including Steve Bannon and Glenn Beck, to call for a ban on AI "superintelligence" that threatens humanity. Released Wednesday, their joint letter targets tech giants like Google, Meta and OpenAI. It urges a prohibition on developing superintelligence until safety and public consensus are assured. The letter highlights concerns about AI's potential risks, including economic disruption and security threats. Signatories include AI pioneers, celebrities, and political figures. The debate over AI's future continues, with concerns about both its potential and the hype surrounding its capabilities.