Nature 438, 900-901 (15 December 2005) | doi:10.1038/438900a; Published online 14 December 2005

Open Innovation Challenges

Special Report Internet encyclopaedias go head to head

Jim Giles


Jimmy Wales' Wikipedia comes close to Britannica in terms of the accuracy of its science entries, a Nature investigation finds.

UPDATE: see details of how the data were collected for this article in the supplementary information.

UPDATE 2 (28 March 2006). The results reported in this news story and their interpretation have been disputed by Encyclopaedia Britannica. Nature responded to these objections .

One of the extraordinary stories of the Internet age is that of Wikipedia, a free online encyclopaedia that anyone can edit. This radical and rapidly growing publication, which includes close to 4 million entries, is now a much-used resource.