RNZ: This Way Up

Naked Science with Dr Chris Smith. This week, how humans and animals use magnetic fields to navigate, how human cells can tell what time it is, and can you tell if someone is lying by watching their eyes?

József Baranyi is using mathematics to map our ever-more-complex food networks. His aim is to improve our response to food safety scares.

Peter Griffin on Vodafone's plans to buy Telstra Clear; so what does it mean for consumers? Plus the TPPA or the Trans Pacific Partership Agreement is being negotiated behind closed doors, and our copyright laws could be in for more changes.

The great Olympic catering challenge is about to start in London. Also for the Muslim competitors it's Ramadan just before the games, so how will they cope with no food or drink in the lead-up? Chris Parkin reports from the UK.

Jeff Lowe of Karori Medical Centre can remove warts! So what is a wart, why do we get them, and will they go away if left untreated?

Looking at some of the world's top emerging technologies with Jason Pontin, the editor-in-chief of the Technology Review.

We roll and fold our way to perfect homemade puff pastry. Baker and chef Julie Clark knows the tricks of the trade.

Stewart Wang is the Director of the International Center for Automotive Medicine at the University of Michigan. He's wants to use in-car sensors to instantly tell emergency services about your possible injuries if you crash, and before they arrive on the scene.

From phones to cameras, soon we could be recharging our electronic gizmos using the heat from our bodies. Corey Hewitt of Wake Forest University is working with Professor Alan Kaiser of Victoria University on the innovation.

Recycling old bicyles for new residents of Aotearoa. With Faisal, Diana Swarbrick, Arif Saeid and Priscilla Pawson from Refugees as Survivors.

Harry Klee, a tomato researcher from the University of Florida, is on the hunt for the perfect tasting tomato.