It All Starts With Hello: Meeting Strangers in NYC

From an early age, we're told: "Don't to talk to strangers." In a city of more than 8 million people, New Yorkers are notorious for sticking to that rule. But TED speaker Kio Stark argues we have everything to gain by acknowledging strangers. In her new book When Strangers Meet: How People You Don’t Know Can Transform You, she explains that it all starts with “hello.”