"The Day After Tomorrow" is a science fiction novel by Allan Folsom that explores the consequences of climate change and extreme weather events. The story follows a group of characters as they navigate a world facing catastrophic environmental shifts, including sudden and severe temperature drops. The narrative intertwines personal struggles with global crises, highlighting the impact of human actions on the planet. As the characters confront their challenges, the novel raises awareness about the urgent need for environmental responsibility and the potential for survival in the face of disaster.