Presents profiles of the 50 states of the nation, the District of Columbia, Puerto Rico, and the US dependencies. Topics include climate, plants and animals, population and ethnic groups, religions, transportation, history, state and local governments, political parties, judicial system, economy, education, arts, media, tourism, sports, famous people.

Offers detailed comparative essays on major biomes and their component ecosystems. Includes entries on land biomes and water biomes and covers climate, elevation, soil, water bodies, vegetation, animal life, food web, plant and animal adaptations, endangered species, human effects on the biome and the effects of the environment on humans' culture and economy.

Focuses on the physical and geological aspects, structure, and features of 48 of the earth's landforms - what they are, how they look, how they were created, how they change over time, and major geological events associated with them. Written for middle school students to support earth science and landform-related assignments, alphabetically arranged entries follow a standard and consistent subheaded format; and range in length from 9 to 11 pages.

Written for 3rd through 6th grade students, this is a handy resource for elementary school level research about the states. The It's My State series is a great source of quick and reliable information that identifies what is common to and unique about each state in the USA. Written for 3rd through 6th grade students, it is a handy resource for elementary school level research about the states. Also included in this resource: Cultures of the World and Superchef series.

Cultures of the World introduces readers to the culture—economy, government, history, lifestyle, and more—of countries the world over. Written for 3rd through 6th grade students it is a handy resource for elementary school level research about the world cultures. Also included in this resource: It's my State and Superchef series.

For 6th grade students through adults: Powerful resource for retrieving, comparing and customizing data on the world’s nations. An interactive site. World Data Analyst allows for finding and comparing data on the world's nations including maps, area, population, demographics, GNP, etc. Country Snapshots feature provides statistics that include maps, area, population, demographics, gross national product and more. Country Comparisons offers tools for creating comparison tables and graphs using either recent or historical statistics. Ranked Statistics performs country rankings for chosen statistical categories. Results are exportable to spreadsheet applications.