What is "plos"

PLOS (for Public Library of Science) is a nonprofit open access scientific publishing project aimed at creating a library of open access journals and other scientific literature under an open content license. It launched its first journal, PLOS Biology, in October 2003 and publishes seven journals, . The organization is based in San Francisco, California, and has a European editorial office in Cambridge, England. The publications are primarily funded by payments from the authors.