What do the study of cancer cells and that of the stars have in common?

Cities around the world are converting to low-energy LED street lights – but some residents say their sleep is being affected and are fighting back.

Dr Bernie Hogan from the Oxford Internet Institute says the misuse of data is a global phenomenon.

The spy agency says cyber-attacks could threaten the democratic process in the UK.

Social media sites and search engines must be pushed to do more to combat the problem, he says.

A city-wide network of sensors monitoring air quality is being installed in Chicago.