"I feel sorry for Steve Kurtz because he lost his wife ... and he didn't even have time to grieve," said art professor Beatriz da Costa. Kurtz is part of the Critical Art Ensemble, an acclaimed group "dedicated to exploring the intersections between art, technology, radical politics and critical theory." Following Kurtz's wife's sudden death, police found "biological materials" at their home and involved the Joint Terrorism Task Force. Kurtz's art uses plants, bacterial cultures and lab equipment.