12:13 UK time, Wednesday, 27 November 2013
Rory Cellan Jones describes how he made - and then lost - money on Bitcoin.
Google reveals it has taken over seven robotics companies and is hiring staff to develop products as part of a team led by its former Android chief.
The group of companies that develop the USB cable announce that a forthcoming generation will be able to be plugged either way round into computer sockets.
A database of more than two million stolen passwords for Facebook, Yahoo and others has been published online, a security firm has found.
A security researcher says he has found a way to hijack a popular brand of drones by launching a Raspberry Pi-equipped aircraft of his own.
People accused of stealing bitcoins - a virtual currency - have been detained by police in two separate operations in China and Germany.
The Big Issue seller who accepts credit cards
Using Kinect cameras to automate a wheelchair
The exclusive hotel rooms 20ft beneath the waves
Will e-publishing help Africa discover the joy of reading?
The university that wants to change the world
Why people are lousy at picking passwords
The most influential users of China's Twitter-like service
The man trying to prevent social media getting in the way of study
A horseback safari through Botswana is an adventure all its own
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