The music video for Radiohead's latest single "House of Cards" was yesterday the most watched clip on the web. Not only is it aesthetically pleasing, but technologically mystifying too - it was filmed without a camera. Read more and see the video...

Video surveillance cameras go relatively unnoticed in London, despite it being the most surveyed country in the world. In France however, where plans to increase their numbers by threefold have just been announced, the extra eye-spies will not go up without a fight. Read more...

French scientist David Servan-Schreiber led a group of 19 cancer specialists in speaking out about mobile phone-related health risks - particularly for children - and calling for increased awareness of the dangers. We asked our Observers, including one of the doctors who signed the agreement, whether they think that mobile phones really are deadly. Read more...