Topics covered in Science Reference Center include biology, chemistry, earth and space science, environmental science, health and medicine, history of science, life science, physics, science and society, science as inquiry, scientists, technology and wildlife. By providing a wide range of topics, Science Reference Center satisfies the demand for standards-based content by providing teachers and librarians with articles correlated to state and national curriculum standards. Science Reference Center contains full text for hundreds of science encyclopedias, reference books, periodicals and other sources.