impact: is a web site on biology, paleontology, phylogeny and geology and which covers the history of Earth. The site is well respected and has been used as a reference by professional paleontologists such as Michael J. Benton, the professor of vertebrate palaeontology in the Department of Earth Sciences at the University of Bristol. It is frequently cited in Science Online. was started by Toby White and Alan Kazlev; the pair were later joined by Chris Taylor, Mikko Haaramo of the Department of Geology at the University of Helsinki, and Chris Clowes. It features professional-level, yet readable articles about: More information...

According to PR-model, is ranked 103,364th in multilingual Wikipedia, in particular this website is ranked 112,414th in English Wikipedia.

The website is placed before and after in the BestRef global ranking of the most important sources of Wikipedia.

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