HowStuffWorks Science has explanations and colorful illustrations related to earth science, life science, and other wonders of the physical world.

Railway Productions features railroad videos dvds books software train collectibles t-shirts hats mugs signs clocks mousepads

Gears Manufacturers - B2b marketplace for manufacturers, exporters and suppliers of various types of gears, gear drives, gear accessories, gear materials, features, gear drive classifications and its different industrial applications as well.

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

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 encyclopedia, Wikipedia encyclopedia, Hutchinson encyclopedia, examples from classic literature, pronunciations, word browser, glossary. Free access

This is the official Web site of Purdue University, home of the Boilermakers, alma mater of the first and last men to walk on the moon, and proud member of the Big Ten Conference. Perennially ranked among the nation's top public universities and research institutions, Purdue serves as Indiana's land-, sea-, and space-grant university with a main campus in West Lafayette and locations across the state.

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