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Princeton University is a vibrant community of scholarship and learning that stands in the nation's service and in the service of all nations.

MathWorks is the world’s leading developer of technical computing software for engineers and scientists in industry, government, and education

TFD Encyclopedia includes Computer Desktop Encyclopedia, Columbia Encyclopedia and many other great sources.

Twitter is without a doubt the best way to share and discover what is happening right now.

Answers.com: Wiki Q&A combined with free online dictionary, thesaurus, and encyclopedias. Ask questions, get answers.

Scientific physics forums for professionals and students to discuss serious issues and topics regarding physics in theory, practice, study and reality. Students can also find help for homework and career perspectives

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

MIT is devoted to the advancement of knowledge and education of students in areas that contribute to or prosper in an environment of science and technology.

Speleogenesis.info, an official site of the UIS Commission on Karst Hydrogeology and Speleogenesis. The goal of the Commission is to promote scientific cooperation and research in karst hydrogeology, with special emphasis to speleogenesis as the core...

YouTube is a place to discover, watch, upload and share videos.