Need To Know Coming Up On NTK: The Push For Midwives, Rochester's Silent Leader & The Future of Biosensors WXXI News Published February 23, 2015 at 3:57 PM EST Facebook Twitter LinkedIn Email http://youtu.be/-hSSeazNzYkWatch Need to Know with host Hélène Biandudi Hofer Thursdays at 8pm on WXXI-TV, Channel 21.1 and Cable 11 or 1221.