Editing Tetrahedron (section)

===Geology===
{{main|tetrahedral hypothesis}}
The [[tetrahedral hypothesis]], originally published by [[William Lowthian Green]] to explain the formation of the Earth,<ref>{{cite book |title=Vestiges of the Molten Globe, as exhibited in the figure of the earth, volcanic action and physiography |volume=Part I |author-link=William Lowthian Green |first=William Lowthian |last=Green |publisher=E. Stanford |place=London |year=1875 |bibcode=1875vmge.book.....G |oclc=3571917 |url=https://books.google.com/books?id=9DkDAAAAQAAJ }}</ref> was popular through the early 20th century.<ref>{{cite book |author-link=Arthur Holmes |first=Arthur |last=Holmes |title=Principles of physical geology |url=https://archive.org/details/principlesofphys0000holm |url-access=registration |year=1965 |publisher=Nelson |page=[https://archive.org/details/principlesofphys0000holm/page/32 32] |isbn=9780177612992 }}</ref><ref>{{cite news |author-link=Charles Henry Hitchcock |first=Charles Henry |last=Hitchcock |editor-first=Newton Horace |editor-last=Winchell |title=William Lowthian Green and his Theory of the Evolution of the Earth's Features |work=The American Geologist |url=https://books.google.com/books?id=_Ty8AAAAIAAJ&pg=PA1 |date=January 1900 |volume=XXV |publisher=Geological Publishing Company |pages=1–10 }}</ref>