The Nigerian-born, US-based author Chimamanda Ngozi Adichie has been listed as one of Time Magazine's '100 Most Influential People'. Her essay 'We Should All Be Feminists', was even sampled by Beyoncé and copied onto T-shirts. Over the years she's written novels, poetry and numerous short stories - and now her new book, 'Dream Count', marks a highly anticipated return to fiction after more than a decade away. So why the long wait? She spoke to the BBC's Emma Barnett. | BBC News Africa