With a biodome-by-biodome structure that mirrors Mother Nature's own design, "Earth Matters" is a celebration of the planet, a warning to protect it, and an inspiring sourcebook full of ideas for making a positive change. Reference pages make up the first part of each section, with maps showing the extent of the biome, and spreads on climate, natural history, and ecology explaining how the biome works. Subsequent spreads explore the threats arising from human activity and show how positive efforts can often overcome the threats and preserve the biome.