Technology
A Nasa spacecraft has sent back historic first pictures of an unexplored region of Mars.
The Mars Phoenix lander touched down in the far north of the Red Planet, after a 680 million-km (423 million-mile) journey from Earth.
The probe is equipped with a robotic arm to dig for water-ice thought to be buried beneath the surface.
The wraps have been taken off the new version of the XO laptop designed for schoolchildren in developing countries.
The revamped machine created by the One Laptop Per Child (OLPC) project looks like an e-book and has had its price slashed to $75 per device.
OLPC founder Nicholas Negroponte gave a glimpse of the "book like" device at an unveiling event at the Massachusetts Institute of Technology.
Microsoft is expected to offer cash back to users of its search engine who buy products online, as it attempts to close the gap on rival Google.
Users will make savings on products sold by Microsoft's advertiser partners via the so-called cashback service.
Age ratings for downloaded video content and video games are to be introduced in the UK.
Overseen by the British Board of Film Classification (BBFC), the scheme will see certificates appear on websites, via set-top boxes and portable players.
Disney, Warners and Fox have signed up to the scheme with other "key industry figures... poised to join the scheme".
Supporters of Carl Icahn's battle to replace the board of Yahoo have been buying up shares in the search engine and online advertising firm.
The oil investor T Boone Pickens told the broadcaster CNBC that he had bought 10 million shares in Yahoo.
