University apologizes over email

Swift backlash from Duke students urges a full-scale probe into incident

Duke University has apologized to Chinese students after a professor sent an email saying they should speak English "100 percent of the time" in a "professional setting" on campus.

Megan Neely stepped down as head of the master of biostatistics program at the university's School of Medicine and apologized for the email she sent on Friday. Neely remains an assistant professor at the school in Durham, North Carolina. The dean of Duke University's medical school also apologized.