This year marks the 75th anniversary of Octavia Butler’s birth. There have been commemorations nationwide, and I wanted to join in by replaying my 2016 episode, “The Legacy of Octavia Butler.” I produced that episode early in the history of my podcast, when I was still discovering the world of sci-fi literature. I became obsessed with Butler’s writing – even though at times it can be disturbing. Nisi Shawl, Ayana Jamieson and Cauleen Smith explain how Butler came to tell stories about power imbalances between humans and other worldly beings, and what her work means to them. And we hear actress Aliza Pearl read a passage from Butler’s 1987 novel “Dawn.”