"Lesson for Today" by Joel Nydahl is a science fiction story written in the early 1950s. The narrative follows Helen and her child, Robbie, as they navigate a post-apocalyptic world ravaged by nuclear devastation. The book explores themes of survival, motherhood, and the impacts of warfare on humanity, emphasizing the struggles faced by the last remaining survivors in a world destroyed by their own creations. In the story, Helen and Robbie find themselves inexplicably spared from the bomb's destruction, existing under an invisible protective dome. As they journey through a desolate landscape seeking Helen's husband, Johnny, they encounter the haunting emptiness of abandoned towns and the remnants of a once-thriving civilization. However, their hopes are shattered when they discover Johnny's skeletal remains, leaving Helen devastated. As radiation sickness begins to affect Robbie, the story culminates in a heart-wrenching tragedy, with Helen realizing that she is left with nothing after losing both her husband and child. The tale serves as a poignant reminder of the fragility of life and the consequences of humanity's choices. (This is an automatically generated summary.)