political controversy has developed over how evolution is taught in schools, especially in the United States. Interest in Darwin's writings continues, and scholars have generated an extensive literature, the Darwin Industry, about his life and work. The text of Origin itself has been subject to much analysis including a variorum, detailing the changes made in every edition, first published in 1959, and a concordance, an exhaustive external index published in 1981. Worldwide commemorations of the 150th anniversary of the publication of On the Origin of Species and the bicentenary of Darwin's birth were scheduled for 2009. They celebrated the ideas which "over the last 150 years have revolutionised our understanding of nature and our place within it". In a survey conducted by a group of academic booksellers, publishers and librarians in advance of Academic Book Week in the United Kingdom, On the Origin of Species was voted the most influential academic book ever written. It was hailed as "the supreme demonstration of why academic books matter" and "a book which has changed the way we think about everything". See also On the Origin of Species – full text at Wikisource of the first edition, 1859 The Origin of Species – full text at Wikisource of the 6th edition, 1872 Charles Darwin bibliography History of biology History of evolutionary thought History of speciation Modern evolutionary synthesis The Complete Works of Charles Darwin Online The Descent of Man, and Selection in Relation to Sex, published in 1871; his second major book on evolutionary theory. Transmutation of species References Works cited . Published anonymously. Full image view Also available here . Published anonymously. Further reading (Vol. 2) Contemporary reviews . Published anonymously. . Extract from Proceedings of the American Academy of Arts and Sciences 4 (1860): 411–415. . . Published anonymously. . Published anonymously. . . Published anonymously. . Published anonymously. For further reviews, see External links The Complete Works of Charles Darwin Online: Table of contents, bibliography of On the Origin of Species – links to text and images of all six British editions of The Origin of Species, the 6th edition with additions and corrections (final text), the first American edition, and translations into Danish, Dutch, French, German, Polish, Russian and Spanish Online Variorum, showing every change between the six British editions On the Origin of Species eBook provided by Project Gutenberg On the Origin of Species, full text with embedded