Giving an overview of various issues, this work includes explanatory essays that tie together the issues and explores the relationships among them. It also contains "Science" news pieces that highlight particular issues and cases relevant to the main scientific findings. It is useful for readers of various levels - from students to professionals.

Interspersed throughout are "Science" news pieces that highlight particular issues and cases relevant to the main scientific findings. An added feature is the inclusion of definitions of key terms and concepts that help students and nonspecialists understand the issues. Published biennially, "State of the Planet" is a clear, accessible guide for readers of all levels - from students to professionals.