In this mov­ing yet prag­mat­ic talk, Kevin Bales explains the busi­ness of mod­ern slav­ery, a multi­bil­lion-dol­lar econ­o­my that under­pins some of the worst indus­tries on earth. He shares stats and per­son­al sto­ries from his on-the-ground research — and names the price of free­ing every slave on earth right now.