ðˈɛn hiː mˈuːvd tə ðə jˌuːnɪvˈɜːsᵻɾi ʌv ˈaɪəwə, ænd ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪnti fˈoːɹ hiː mˈuːvd tə ðə jˌuːnɪvˈɜːsᵻɾi ʌv kˌælɪfˈoːɹniə, bˈɜːkli, wˌɛɹ hiː bɪkˌeɪm ɐ fˈʊl pɹəfˈɛsɚ bᵻfˌoːɹ mˈuːvɪŋ tə ðə jˌuːnɪvˈɜːsᵻɾi ʌv ˌɪlənˈɔɪ æɾ ɜːbˈɑːnə tʃæmpˈeɪn ɪn tˈuː θˈaʊzənd fˈoːɹ.
Then he moved to the University of Iowa, and in 1994 he moved to the University of California, Berkeley, where he became a full professor before moving to the University of Illinois at Urbana–Champaign in 2004.