Ronald Takaki, a long-time professor of ethnic studies at the University of California at Berkeley and a pioneer in the field, died last week at the age of 70. For years, Takaki fought multiple sclerosis. Takaki was best known for his work in Asian American history and was the author of numerous books, including Strangers From a Different Shore: A History of Asian Americans. But Takaki's work extended beyond Asian Americans. At Berkeley, he led efforts to create the first ethnic studies doctoral program in the United States. In 1966, when he was teaching at the University of California at Los Angeles, he taught the University of California system's first course on black history.