In 2018, she became the announcer for the PRI variety show and podcast Live Wire with Luke Burbank.

Her essays have been published in The New York Times, Virginia Quarterly Review, Audubon and Oxford American.

The book received favorable reviews from The New York Times, Publishers Weekly, Booklist, and The Guardian.

Her essays have also appeared in several anthologies, including The Best American Science and Nature Writing, Pop When the World Falls Apart, "Dear McSweeney's", Cat is Art Spelled Wrong, and Little Boxes: Twelve Writers on Television.

Passarello also has credits as a performer, having originated roles in plays by David Turkel (Wild Signs, Holler) and Christopher Durang (Mrs. Bob Cratchit's Wild Christmas Binge), as well as several voice-over credits.