Current chatbots aren’t likely to help lone actors invent a deadly pathogen, experts say. But newer models, trained in biology, may need stronger safeguards.

Senator Kirsten Gillibrand of New York is devoting a hearing to a topic that affects millions but is poorly understood and widely ignored, including when it comes to federal research money.

NBC is broadcasting the Monday night ceremony, which will be hosted by Mariska Hargitay.