Biodiversity

A conservation biology textbook written by leading scientists and released free for readers everywhere. It covers biodiversity, habitat loss, overharvesting, invasive species, climate change and conservation planning.

Navjot S. Sodhi, Paul R. Ehrlich

An ecosystem-based environmental science textbook that explains why biodiversity is declining and how climate change, habitat loss and pollution drive that loss. Each chapter connects ecological principles to real conservation solutions.

Catherine Koning, Rhine Singleton

A WWF handbook on ecosystem services, the free benefits nature provides like pollination, clean water and food, taught through outdoor activities for young learners.

Peter Wiborn

A short open textbook on the basics of conservation biology, from how much biodiversity exists to habitat loss, invasions, restoration and protected areas. Includes quizzes and a glossary to check your understanding.

Siti Fatimah Md. Isa