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Web Gallery of Art
The Web Gallery of Art is a virtual museum and searchable database of European fine arts, decorative arts and architecture (3rd-19th centuries), currently containing over 52,800 reproductions. Artist biographies, commentaries, guided tours, period music, catalogue, free postcard and mobile services are provided.
WebMD
WebMD provides valuable health information, tools for managing your health, and support to those who seek information.
What Works Clearinghouse (WWC), Institute of Education Sciences, Department of Education
From the U.S. Institute of Education, the What Works Clearinghouse (WWC) provides the information you need to make evidence-based decisions in your classrooms and schools.
Wordnick
Wordnik is a place for all the words, and everything known about them. Our goal is to show you as much information as possible, as fast as we can find it, for every word in English, and to give you a place where you can make your own opinions about words known.
World Bird Database
Avibase is an extensive database information system about all birds of the world, containing over 53 million records about 10,000 species and 22,000 subspecies of birds, including distribution information for 20,000 regions, taxonomy, synonyms in several languages and more. Avibase was initiated in 1992 and is a service to the bird-watching and scientific community.
World Factbook, U.S. Central Intelligence Agency
The World Factbook provides basic intelligence on the history, people, government, economy, energy, geography, environment, communications, transportation, military, terrorism, and transnational issues for 265 world entities.
World Health Organization (WHO)
Dedicated to the well-being of all people and guided by science, the World Health Organization leads and champions global efforts to give everyone, everywhere an equal chance to live a healthy life. 
World Wildlife Fund (WWF)
For more than 60 years, WWF has worked to help people and nature thrive.

As the world’s leading conservation organization, WWF works in nearly 100 countries. At every level, we collaborate with people around the world to develop and deliver innovative solutions that protect communities, wildlife, and the places in which they live.
Writing Center, Amherst College
Amherst's Writing Center staff have developed handouts to introduce essential skills and habits for successful  writing, reading, and public speaking throughout college. 
Writing Center, Harvard College
Harvard's Writing Center provides Strategies for Essay Writing, which includes guides to various aspects of writing academic essays. It is process-oriented, meaning that it  leads student writiers through the steps of reading the assignment prompt, generating ideas, outlining, and so on.
Writing Center, University of North Carolina
The University of North Carolina's Writing Center Tips and Tools includes handouts and instructional videos on parts of the writing process, on writing in specific disciplines and genres, and on sentence-level and stylistic topics. 
Writing Center, University of Wisconsin-Madison
The UW-Madison Writer's Handbook hosts a broad range of guides to aspects of the writing process, argumentation, and genres.
Writing Lab (OWL), Purdue
The Purdue University OWL (Online Writing Lab) includes detailed guides to citation styles, writing process strategies, academic genres, ESL resources, and job-search writing.
WWC
From the U.S. Institute of Education, the What Works Clearinghouse (WWC) provides the information you need to make evidence-based decisions in your classrooms and schools.
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