Introduces students to the topic of weather and natural disasters, covering such topics as weather basics, weather phenomena, forecasting, and climate. Provides information on the scientific aspects of various types of disasters including: blizzards, earthquakes, flooding, tornadoes, volcanoes, and wildfires.

Covers the causes symptoms, diagnoses, tests, treatments and prognoses of health problems; the main systems of the human body, including the circulatory system, the endocrine system, special senses and much more; and a detailed examination of nutrition, and medical and mental health issues.

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.

Provides detailed information on 52 drugs and other addictive substances, defined as illegal drugs, legal addictive drugs and other substances as well as commonly abused classes of prescription and over-the-counter drugs. Statistics highlight each entry and sidebars provide information on the legal, historical or social aspects of the particular drug. Difficult words are defined within the text. Appropriate for middle school students.

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.

This alphabetically organized set opens up the entire world of science in clear, nontechnical language. Topics profiled are related to the physical, life, and earth sciences, as well as to math, psychology, engineering, technology, and the environment.

This encyclopedia explores water science and issues from an international perspective. Topics covered include lakes and streams, oceans, aquatic animals, weather and climate, glaciers, wetlands, ecology, hydropower, commercial fishing, acid rain, recreation, pollution, economics, water conservation, international water law, global warming and much more.

Features biographies of notable historic and current figures from American history, world history, literature, science and math, arts and entertainment, and the social sciences. Entries focus on the people most often studied in middle and high school.

Provides current information on more than 5,000 legal topics. Includes completely revised articles covering important issues, biographies, definitions of legal terms and more. Covers such high-profile topics as the Americans with Disabilities Act, capital punishment, domestic violence, gay and lesbian rights, and physician-assisted suicide.

This fully updated version of the original 1989 edition of the World Encyclopedia of Police Forces and Correctional Systems describes the national law enforcement and correctional systems of more than 195 countries across the globe.