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Causal links

Web Guides

http://www.beep.ac.uk/content/55.0.html
Page from bioethics education project on correlation and causation

http://plus.maths.org/issue31/features/stickland/index.html
Article with entertaining examples of why correlation does not equal causation

http://www.nelh.nhs.uk/hth/archive.asp
Critical reviews of health stories in the media, comparing the media story to the original paper

http://www.skeptic.com/index.html
US journal devoted to sceptical analysis of scientific claims.

http://www.stats.org/index.jsp
Critical analysis of media stories involving statistics