Computer Meltdown Hits Delta Flights

How Delta Airlines flyers were stranded this week by a power cut. And why China's Alibaba plans to help foreign firms enter its own market. Plus, US comedian Ari Shaffir tells us why he is not missing his smartphone since swapping it for a simpler handset 18 months ago. Presented by Rory Cellan-Jones, with special guest Georgie Barrat, and Zoe Kleinman from the BBC Online technology desk.

(Image: Travellers queuing at Delta Airlines' check-in desk at New York's LaGuardia Airport this week. Credit: Getty Images).