R L Trask

One of the most celebrated linguists of his time, R. L. Trask was a brilliant lecturer and the author of many popular works, including "The Penguin Guide to Punctuation" and "The Penguin Dictionary of English Grammar". Born in New York State in 1944, he lived in England after 1970, and was Professor of Linguistics at the University of Sussex until his death in 2004.

One of the most celebrated linguists of his time, R. L. Trask was a brilliant lecturer and the author of many popular works, including "The Penguin Guide to Punctuation" and "The Penguin Dictionary of English Grammar". Born in New York State in 1944, he lived in England after 1970, and was Professor of Linguistics at the University of Sussex until his death inBlackwater founder Erik Prince accused to lying to Congress about Trump Tower meeting Erik Prince, founder of the private mercenary company Blackwater, is being accused of lying to Congress about his role in Trump campaign meetings after a surprising interview with Al Jazeera host Mehdi Hasan. Hasan spoke to CBSN's Tanya Rivero about the implications of his interview.