Shining a light on San Francisco

With San Francisco being the home to Silicon Valley and most key tech innovations in the last 20 years, it would be strange for the area not to be trying new things itself.

Sumi Das looks at how even the lighting in the bay area has become hi-tech with a shining example of Bay Bridge.

Watch more clips on the Click homepage. If you are in the UK you can watch the whole programme on BBC iPlayer.