The Sky Is Falling

<p><em>The Sky is Falling</em> by Lester del Rey is a science fiction novel that explores the idea of a society on the brink of collapse due to the forces of both internal and external threats. The protagonist Dave Hanson finds himself thrust into a world where civilization has regressed yet advanced technology from a forgotten era offers hope for survival. As the story unfolds Dave must navigate a complex landscape of time travel shifting realities and existential danger. Del Rey weaves themes of human resilience the consequences of technological dependence and the potential for rebirth from societal ruins.</p>