Need To Know Coming Up On NTK: The Genealogy Craze, The Social Justice Photography of Frederick Douglass & More WXXI News Published April 4, 2016 at 3:03 PM EDT Facebook Twitter LinkedIn Email https://www.youtube.com/watch?v=mPlNIw1bxYc" target="_blank">https://www.youtube.com/watch?v=mPlNIw1bxYcWatch Need to Know with host Hélène Biandudi Hofer Thursdays at 8pm on WXXI-TV, Channel 21.1 and Cable 11 or 1221.