How often do you get your hair cut? When was the last time you ate out? Do you subscribe to Netflix? Questions more akin to filling out online dating profiles will soon be asked by mortgage providers across the UK. But is it another case of a step too far for big data?

As the 'Big Data' phenomenon gains ground, OgilvyOne believes we can collect and frame the data around us to create smarter experiences and easier lives. The agency has created a video to show what's possible when data and technology are linked.

If you're planning a holiday, you'll probably have seen targeted advertising based on your browsing history. Vodafone targeted its roaming packages at people it knew were jetting off, and increased sales by 196%. But can data create more complex behaviour changes?

Air pollution is a major problem in China. Beijing has been named the worst polluted city in the world. In partnership with IBM, the government is using technology and data to predict the occurrence of smog three days in advance and adjust city traffic accordingly.