Former resident Rosemary McGuire’s third book, “Cold Latitudes,” what she calls a “a love story for a threatened place,” will be published April 15.

The book is a collection of memoir essays that detail a roughly 8-year period of travels and work in the Alaska Arctic and Antarctica—areas on the front lines of climate change that few people get to see. McGuire worked as field tech for scientific research efforts. She counted birds, measured fish…