We constantly hear about global warming from lentil sandal-wearing hippies and unless we can make a quick buck from our old tat we'd rather hang onto it thank you very much. So step forward this website by the name of Gazelle, which has been buying up old gadgets such as mobile phones, iPods, mp3 players, and laptops, regardless of their age.

Forget that weird mobile phone sonar thing in The Dark Knight,  the future of surveillance is soft and fluffy.  A forensic science graduate has caught her grandmother's care assistant stealing by putting a camera inside a teddy bear.