This chapter explores how validation of new results works in science. It also looks at the peer-review process, both pros and cons, as well as scientific communication, scientific journals, and scientific publishers. We give an assessment of the total number of existing journals with peer review. Other topics discussed include the phenomenon of open access, predatory journals and their impact on contemporary science, and the market of scientific publications. Finally, we touch on degenerative phenomena, such as the market of co-authors, bogus papers, and irrelevant and wrong studies, as well as the problem and the social cost of irreproducible results.
