The problem with having cold fusion in this article is that mainstream scientists don't believe the data is tentative. They believe the whole field is filled with errors and that it is very unlikely that any fusion is occurring. Listing it with these other true conundrums of science would lead readers to believe that the field has more respect than is the case. Quantum gravity and string theory are studied in the top research institutions on the planet; cold fusion is not. There are lots of references in the introduction of the cold fusion article which support what I am saying, especially the Physics Today and Scientific American references.