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Samantha Power

Samantha Power was President Obama's ambassador to the UN, taking part in life-and-death decisions, including whether to launch military strikes. She talks about her two biggest foreign policy challenges — whether to intervene in Libya and Syria.

A moment on the street in Addis Ababa.

Ghanaian post-colonial theorist Ato Quayson thinks a lot about globalization, diaspora and transnationalism. Because he’s a literary scholar, he decided to "read" a single street — Oxford Street in Accra — as a study of contemporary urban Africa.

Lending a helping hand.

Historian Emily Calacci says the massive migration into African cities isn't following the Western model of urban development. Instead of an infrastructure of roads, railways and electric grids, many African cities rely on "people as infrastructure."

Art of Julie Mehretu

The families of Dagmawi Woubshet and Julie Mehretu fled Ethiopia because of the brutal Communist regime that overthrew Emperor Haile Selassie. The violence and corruption in the post-colonial era decimated the hope and idealism of many Africans.

Children in Addis Ababa.

Dagmawi Woubshet and Julie Mehretu were both born in Addis Ababa and then moved to America. They wonder what the city's explosive growth will mean for its unique character — one rooted in Ethiopia's history as the only African nation never colonized.

Teju Cole

Teju Cole grew up in Nigeria and then moved to U.S., joining millions of others in the African diaspora. He became an acclaimed novelist and photographer, and now celebrates the cosmopolitan culture of global cities, including Lagos and New York.

Chloe and Anne

People really remember the first books they fall in love with. That came up in a conversation Anne had on stage with three writers — Chloe Benjamin, Natalia Sylvester and Rebecca Traister. They were each sharing a favorite book.

sunny protest

Lynne Segal, the British feminist icon, has a theory about happiness: it's both personal and political. She advocates radical happiness — finding joy in collective action.

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