A prominent professor at Columbia University's journalism school has sued the institution, charging it with misusing an endowment fund, The New York Times reported. Sylvia Nasar, co-director of the business journalism program and author of A Beautiful Mind, charges that Columbia was supposed to match a $1.5 million gift for an endowed chair Nasar holds, so that Nasar or others holding the chair would have funds both for salary and research. Instead, the suit charges, Columbia didn't match the funds and Nasar had to pay for many of her research expenses. Columbia has declined to comment on the suit, saying it does not discuss litigation.