Silver pen can 'draw' circuits

Google faces 'wire tapping' case over Street View

Cost of Euro mobile roaming falls

Inkjet printing to produce solar cells

World of Warcraft offered 'free'

Security researchers discover 'indestructible' botnet

Finding truth and beauty in data

Over-50s flock to social networks

Google chairman warns of censorship after Arab Spring

Film makers seek injunction to block pirate site

Microsoft launches Office in the cloud

Google+ challenges Facebook in social network battle