From WP:Fringe,
"Ideas that have been rejected, are widely considered to be absurd or pseudoscientific, only of historical interest, or primarily the realm of science fiction, should be documented as such, using reliable sources.

Ideas that are of borderline or minimal notability may be mentioned in Wikipedia, but should not be given undue weight. Wikipedia is not a forum for presenting new ideas, for countering any systemic bias in institutions such as academia, or for otherwise promoting ideas which have failed to merit attention elsewhere. Wikipedia is not a place to right great wrongs. Fringe theories may be excluded from articles about scientific topics when the scientific community has ignored the ideas. However, ideas should not be excluded from the encyclopedia simply because they are widely held to be wrong. By the same token, the purpose of Wikipedia is not to offer originally synthesized prose "debunking" notable ideas which the scientific community may consider to be absurd or unworthy. Criticisms of fringe theories should be reported on relative to the visibility, notability, and reliability of the sources that do the criticizing."