Snap Lifts Silicon Valley's Mood

The company behind Snapchat gets ready to hit the New York Stock Exchange with a mammoth $25bn valuation. Plus tech founder Ismail Ahmed of WorldRemit on why he's worried for himself and his customers about Donald Trump's US travel ban against people from seven predominantly-Muslim countries. And how the Basque province of Biscay wants to encourage ordinary savers to invest in startups. Presented by Rory Cellan-Jones, with Jane Wakefield from the BBC Online tech desk, and special guest Lucy Marcus, tech investment consultant and columnist.

(Image: Snapchat sign hanging on the New York Stock Exchange, Credit: Reuters/ Brendan McDermid).