It is one of the most recognizable scientific journals in the world, and was ranked the world's most cited scientific journal by the Science Edition of the 2010 Journal Citation Reports and is ascribed an impact factor of 40.137, making it one of the world's top academic journals.
Det er rangeret som verdens mest citerede videnskabelige tidsskrift af Science Edition i 2010-udgaven Journal Citation Reports og har en I-faktor på 40.137, hvilket gør det til verdens mest citerede akademiske magasin.