Some US schools are piloting AI surveillance robots that can detect aggressive behavior in people alert security and more amid growing gun violence concerns (Megan Tagami/Wall Street Journal)

Megan Tagami / Wall Street Journal:
Some US schools are piloting AI surveillance robots that can detect aggressive behavior in people, alert security, and more, amid growing gun violence concerns  —  When Lori Andrews attended her daughter's graduation at Santa Fe High School, she spotted a 5-foot-10, 400-pound robot roaming …