Outriders is BBC Radio 5 live's programme dedicated to exploring the frontiers of the web. 

Don't Log Off

Alan Dein discovers the real life stories behind online profiles via Facebook and Skype. Alan locks himself away for a week to talk to people on the internet. He starts with nothing, just an online profile which says 'talk to me'. The results are intriguing, funny and often very moving.

The Life Scientific

Each week, Jim al-Khalili invites a leading scientist to tell us about their life and work. He'll talk to Nobel laureates as well as the next generation of beautiful minds to find out what inspires and motivates them and what their discoveries might do for us.

Ching Kai Ng is following