Alison Hawthorne Deming’s new poetry collection Stairway to Heaven, including the poem “Castalia,” will be out in September from Penguin. Her most recent nonfiction book is Zoologies: On Animals and the Human Spirit (Milkweed 2014). Recipient of a 2015–16 Guggenheim Fellowship, she is Agnese Nelms Haury Chair in Environment and Social Justice and Professor of Creative Writing at the University of Arizona.