Columbia University, on edge amid growing concern about safety and antisemitic rhetoric on a campus rocked by protests and encampments, made all classes remote Monday, the first night of Passover.

Columbia remained calm on Friday, despite rumors, denied by the university, that administrators would summon the police to campus as they did last week, when more than 100 students were arrested.

While the university was able to strike a deal with the Trump administration, the national outlook for federal science ...

Columbia University Information Technology, which provides technology support to the University, restored access to LionMail, Columbia’s email server; CourseWorks, where professors post assignments ...