Columbia Graduate Students Walk Out Over Union Fight

Dozens of graduate students at Columbia University (NY) walked out of classrooms and research labs on Tuesday morning to press home their right to unionize, in a one-week strike timed for high impact. With classes scheduled to end on April 30, the strike comes at the busiest time of the year, as students gear up for finals, professors wrap up their classes — many taught with the help of graduate teaching assistants who also grade papers and projects — and the campus prepares for commencement.