Warmth is a powerful, emotional memoir in which Daniel Sherrell explores what it means to grow up in a world threatened by the climate crisis. Written as a letter to a future child, the book blends personal stories, scientific reality, and raw vulnerability as Sherrell confronts his fears, hopes, and responsibilities in a warming world. Instead of charts and data, he offers a deeply human perspective on anxiety, activism, and the struggle to find meaning during uncertain times. Honest, poetic, and boldly introspective, Warmth captures the emotional weight of living through environmental change. It is a book about courage, care, and imagining a future worth fighting for.