Science.gov searches over 60 databases and over 2,200 scientific websites to provide users with access to more than 200 million pages of authoritative federal science information including research and development results.

Find peer-reviewed, full-text articles from journals in the areas of the physical and social sciences, technology, medicine, engineering, the arts, literature, and more. Undergraduate researchers can expand and refine search results through the Topic Finder, and citation tools are integrated directly into the user’s workflow.

(Para buscar en Espanol, seleccione "Lenguas" en la parte superior.)

POWER Library E-Resource – Sponsored by Commonwealth Libraries.

The truth. The whole truth. And nothing but the truth: non-fiction eBooks, games and more about people, places, nature, history, and science for grades 3-5! Requires Adobe Flash ™

POWER Library E-Resource – Sponsored by Commonwealth Libraries.

Full text for hundreds of science encyclopedias, reference books, periodicals, & other sources. Topics covered include: biology, chemistry, earth & space science, environmental science, health & medicine, history of science, life science, physics, science & society, science as inquiry, scientists, technology & wildlife.

POWER Library E-Resource – Sponsored by Commonwealth Libraries.

Find information on diseases, conditions, and wellness issues on the National Institutes of Health's web site for patients and their families and friends. MedlinePlus offers reliable, up-to-date health information, anytime, anywhere, at no charge. Produced by the National Library of Medicine. (Para buscar en Espanol, seleccione "Espanol," de la izquierda.)

The Digital Public Library of America brings together the riches of America’s libraries, archives, and museums, and makes them freely available to the world. Search by place, date, exhibition or a general keyword search.

POWER Library E-Resource – Sponsored by Commonwealth Libraries.