When Roya Hakakian moved from Iran to the U.S., she didn't think any poet in her adopted country could top the ones whose work she grew up with. But then she discovered a piece that blew away her prejudices. It was "My Papa's Waltz" by Theodore Roethke.
In Black Cool, Rebecca Walker collects essays that assemble a "periodic table" of coolness in African-American culture. Walker and artist Hank Willis Thomas, who contributed an essay, talk with NPR's Neal Conan about the ever-evolving definition: from Nike Air Jordans to Barack Obama.