This Way Up for Saturday 22 February 2014

Underground farming

Steven Dring's set up a subterranean farm using a disused air raid shelter in London.

Favela Street

Favela Street is encouraging street kids to play football to escape gang life in Rio de Janeiro. Jo Griffin is a freelance journalist who's visited Brazil to see Favela Street in action.

Tech news: WhatsApp and medical records

Bits and bytes from the hi tech world with Peter Griffin. So why did Facebook pay $19 billion dollars for the messaging app, WhatsApp? Plus taking medical records into the digital age.

Chilli genetics

A team of scientists including Allen Van Deynze at the University of California Davis has cracked the genome of the chilli pepper. Now it's been published can growers breed tastier chillis and even instant salsa tomatoes?!

Canelés de Bordeaux

It might not be quite as well known as the croissant or the quiche, but this custardy column really does taste good enough to conquer the world.

We make the French sweet treat Canelés de Bordeaux with Eric Hausser, the owner and head patissier at the French Can Can bakery.

Smelly phone calls

The oPhone's a mobile phone that transmits smells as well as texts and voices. Professor David Edwards of Harvard University is its creator.

Naked Science

Naked Science with Dr Chris Smith. Researchers think they've worked out why air pollution can trigger strokes and heart attacks. Also how stockbrokers' and sharetraders' moods can move the markets.