Dr. Cameron Smith (Portland State University) delivers the third lecture of the 2014/15 Perimeter Institute Public Lecture Series, in Waterloo, Ontario, Canada. Held at Perimeter Institute and webcast live worldwide on Dec 3., 2014, Smith's lecture explores the biological and cultural challenges associated with multigenerational interstellar space travel. Perimeter Institute Public Lectures are held in the first week of each month. More information on Perimeter Public Lectures: http://ow.ly/DCYPc Join the conversation: @Perimeter #piLIVE