Tackling lithium battery fires on planes

When we fly we love to take our gadgets with us. But the lithium batteries that power them can catch fire. We find out about a new campaign urging us to pack with safety in mind.Also this week: the BBC's Lily Jamali visits an international competition for new AI applications in San Francisco. And protecting Africa's endangered wildlife is an increasingly high-tech business - a new scheme aims to give conservation workers the latest skills.Presenter: Chris Vallance Producer: Tom Quinn(Photo: A man is in an airport lounge. He is charging his smartphone with a portable charger, which is resting on a suitcase. Credit: Getty Images)