
Union leaders and university officials have been negotiating for over a year, yet a contract has not been agreed to. Grad students began an indefinite strike on the university's last day of classes.
(Image credit: Michael Dwyer/AP)

Union leaders and university officials have been negotiating for over a year, yet a contract has not been agreed to. Grad students began an indefinite strike on the university's last day of classes.
(Image credit: Michael Dwyer/AP)