Colour footage of London in the 1920s allows us to be tourists in our own past
Jonathan Jones: The full-colour silent era footage that caused so much excitement online recently is almost like science-fiction
Peering at bright screens after dark could harm health, doctor claims
Light from TVs, computers, tablets and smartphones may disrupt sleep and raise risk of obesity, heart disease and depression
George Soros invests in ‘hyperfast’ internet firm
Soros investment vehicle Quantum Strategic Parters injects £50m in fibre-optic company Hyperoptic
Cannes 2013 live blog day 8: Only God Forgives, All Is Lost
All the news, reviews, comment and buzz from the Croisette on day eight of the Cannes film festival
Xbox One: why we need time to figure this out
Keith Stuart: The Xbox One event has had a tough reaction from critics – the same fate befell PlayStation 4. But are we placing too much importance on these strange presentations?
German IT firm seeks autistic workers
SAP says it aims to train 650 workers with autism to become IT specialists by 2020
Cannes 2013: Muhammad Ali’s Greatest Fight – first look review
Stephen Frears's lightweight account of Ali's stand over Vietnam does scant justice to its charismatic central protagonist
Robert Redford on America: ‘Certain things have got lost’
The writer-director uses Cannes press conference to say that the US has lost its way since the second world war, and that rampant development must be controlled
The Great Gatsby meets Baz Luhrmann
Sam Jordison: This might be the best attempt yet to film Fitzgerald's masterpiece. Which is not to say this is a good film
Luke Skywalker’s Star Wars Levi’s auctioned
Ben Child: Stone-coloured trousers worn by Mark Hamill throughout 1977 film have gone under the hammer in a US online auction
Google chief rejects Ed Miliband’s call for ‘responsible capitalism’
Eric Schmidt says search giant follows international rules after Labour leader criticised company over tax practices. By Charles Arthur
Google Big Tent: Ed Miliband, Eric Schmidt and more
Labour leader makes a speech in which he says the internet company needs to 'do the right thing' on tax. By Charles Arthur
Cannes film festival diary: day eight
Xan Brooks: People are beginning to leave Cannes. Perhaps it's because they don't want to catch germs from Only God Forgives
Xbox One: does the Microsoft console have anything new to offer?
Microsoft claims it can do everything, from the traditional playing of games and films to reading your heartbeat and making conference calls. But is that what customers want, asks Tom Meltzer
Cannes 2013: All Is Lost – first look review
Andrew Pulver: JC Chandor's drama of survival at sea features an impressive – and largely non-speaking – performance from Robert Redford, but is a little too pared-down for its own good