The Missouri Botanical Garden offers this colorful and appealing Web site about Earth's biomes and aquatic ecosystems. Designed for kids, Biomes of the World offers loads of well-presented information on rainforest, taiga, tundra, desert, temperate deciduous forest, and grassland, as well as freshwater and marine ecosystems. Each biome or ecosystem includes pages of photos and facts covering related topics, such as location, biota, and threats. While no formal lesson plans are provided, this extensive and highly visual Web site offers a fantastic learning resource for younger students.