By https://qz.com/author/cristolomia
Publication Date: 2026-06-05 13:53:00
An open letter signed by the heads of OpenAI, Anthropic, Google DeepMind, and Microsoft AI warns that advances in AI are eroding barriers to biological weapons development
OpenAI, Anthropic, Google CEOs call for DNA screening law
![Chromecast (2nd gen) and Audio cannot Cast in ‘Untrusted’ outage [U]](https://i0.wp.com/9to5google.com/wp-content/uploads/sites/4/2019/08/chromecast_audio_1.jpg?resize=1200%2C628&quality=82&strip=all&ssl=1 "Chromecast (2nd gen) and Audio cannot Cast in ‘Untrusted’ outage [U]")