Several Chinese immigrants to the United States have also been awarded the Nobel Prize, including:, Samuel C. C. Ting, Chen Ning Yang, Tsung-Dao Lee, Daniel C. Tsui, and Gao Xingjian. Other overseas ethnic Chinese that have achieved success in sciences include Fields Medal recipient Shing-Tung Yau and Terence Tao, and Turing Award recipient Andrew Yao. Tsien Hsue-shen was a prominent scientist at NASA's Jet Propulsion Laboratory, while Chien-Shiung Wu contributed to the Manhattan Project (some argue she never received the Nobel Prize unlike her colleagues Tsung-Dao Lee and Chen Ning Yang due to sexism by the selection committee). Others include Charles K. Kao, a pioneer in fiber optics technology, and Dr. David Ho, one of the first scientists to propose that AIDS was caused by a virus, thus subsequently developing combination antiretroviral therapy to combat it. Dr. Ho was named TIME magazine's 1996 Man of the Year. In 2015, Tu Youyou, a pharmaceutical chemist, became the first native Chinese scientist, born and educated and carried out research exclusively in the People's Republic of China, to receive the Nobel Prize in natural sciences.