The 91av Book Club has been reading the late Octavia E. Butler’s dystopian novel Parable of the Sower, which opens in Butler’s vision of 2024, a world ravaged by climate change and income inequality. This week, our reporter Grace Wade caught up with Butler’s friend and fellow sci-fi author Nisi Shawl to dig into the story behind the writing of Parable of the Sower, and its extraordinary prescience about today.