Greta Thunberg's 'How dare you?' a major moment for climate movement

Thunberg's dominant status in the climate movement is easy to explain, say those who have met the 16-year-old high school student, who is taking a year off from her studies. "She's done something that seems so unusual: a school strike. School is a very important thing for kids all around the world," said Jennifer Morgan, the executive director of Greenpeace International.