The Climate Book is a comprehensive guide to the climate crisis, edited by Swedish climate activist Greta Thunberg. Rather than presenting the subject from a single author's perspective, the book brings together contributions from more than 100 scientists, researchers, economists, historians, indigenous leaders, activists, and other experts. Their essays collectively explain the scientific basis of climate change, its ecological and social consequences, and the systemic changes required to address it.

The book is divided into major sections that build a broad understanding of the climate emergency—from how the Earth's climate system works and what human activity has changed, to the consequences already being experienced and the possible solutions. Thunberg also emphasizes the importance of understanding the connections between climate change, biodiversity loss, inequality, economics, politics, colonialism, energy, food systems, and human rights.