Matt Seaton: The main difference between a woman-specific bike and a small man's one is that women tend to have relatively longer legs and shorter torsos than men, so the frame geometry is adjusted.
Commercials for junk food are being banned on children's television, but advertisers are moving onto a new battlefield - the internet. Helen Pidd reports.
The government concedes patients should be allowed a veto on information about their medical history being passed from their GP to a national database.
David Adam: Scientists have blamed video games for the explosion in childhood obesity. Nike, however, thinks it has the answer. It has invented an electronic gizmo that sits in the shoes of video-game players and rewards their exercise in the real world with prizes in the virtual one.