The Green Glass Sea by Ellen Klages

During World War II, a spirited young girl is uprooted to an isolated desert laboratory where her father works on a top‑secret atomic research project; there she befriends a lonely, bookish neighbor and the two form an unlikely friendship. Living among brilliant, driven scientists and their families, they experience the small joys and strict secrecy of the Los Alamos community—school plays, rationing, experiments, and whispered fears about the weapon being built. As the girls grow up together amid curiosity and fear, they confront personal loss, the moral tensions of scientific discovery, and what it means to come of age in a world forever altered by technology.

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