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IHS Inc. -- Engineering, Technical, Energy and Market-specific Information Solutions

Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Memidex is a free online dictionary and thesaurus with extensive cross-referencing, complete inflections, simple interface, and frequent updates. It

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

CDC Centers for Disease Control and Prevention - Your Online Source for Credible Health Information

Find environmental information about your community: learn how bad the pollution is, where the toxic chemicals come from, what the health risks are, and what actions you can take

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

symptom checker allowing research of the causes of one or many symptoms in an extensive knowledge base, including common and rare causes.