The (AAAS) American Association for the Advancement of Science, International weekly science journal. Many articles on science and technology, technical, social, political and economic aspects. Published in PDF format.

http://www.sciencemag.org [ science journal ]

    elsevier.com is the web resource for the publishing house Elsevier, specializing in scientific, technical and medical information. Find all products, support and contacts, and information about the company.

http://www.elsevier.com/wps/find/ [ publishing house Elsevier ]