Top ai executives are calling for a law to protect against biological weapons, citing concerns that ai is making it easier to design and create bioweapons. The executives, from companies including OpenAI, Anthropic, and possibly others, are warning about the biosecurity risks associated with synthetic dna and ai-generated dna. The specifics of the proposed law and the companies involved are not entirely clear, with some reports mentioning a call for dna screening laws and others referencing a broader need for regulation.