There's a simple and powerful way to confront the world's most pressing crises, says women's rights activist Yifat Susskind: think like a mother.

In October of 2015, more than 55 women had accused entertainer Bill Cosby of sexual assault. We gathered 27 of those women together in one room for an exclusive Dateline NBC interview about their allegations.

Twitter CEO Jack Dorsey discusses the future of the platform -- acknowledging problems with harassment and moderation and proposing some fundamental changes that he hopes will encourage healthy, respectful conversations.