This Way Up for Saturday 9 June 2012
The recession-proof treasure found washed up on beaches around the world and worth up to $30,000 a kilo! With author Christopher Kemp, Anton van Helden from Te Papa and Haami Te Whaiti.
Dr Chris Smith on using a mother's blood to sequence her baby's DNA before birth. Also some good news in the fight against heart disease, and for spinal injury patients.
Brian Wansink's working on visual cues like coloured potato chips to tell us when we're full and to stop us eating more than we should.
Dr Zoe Laughlin of the Institute of Making at University College London is studying what cutlery tastes like and how it can impart flavour to our food.
We look at some of the world's top emerging technologies with Jason Pontin, the editor-in-chief of the Technology Review.