This Way Up for Saturday 22 May 2010
Modern day geishas are fighting for fairer working conditions in Japan. David McNeill reports.
The findings of the 10-year-long Interphone study into the potential link between cellphone use and cancer are inconclusive. Nathaniel Rich has written about the issue for Harpers magazine.
A listener food question: why are black carrots being used in our drinks? Professor Julian Heyes of Massey University knows.
A new series with Maggie Forest looking at the world's most popular sauces and condiments. This week, mustard.
Social games- a cross between social networking and computer gaming- are being used by millions worldwide. We speak to Nick Parfene who's using them to get real-time transport information. Hayden Green, Robyn Gallagher and Matt Troughton are Four Square fans- it awards people points for going out. Finally, Ariel Hauter of Armchair Revolutionary wants social gaming to save the world.
The science of pregancy with Linda Geddes of the New Scientist. This week, how the latest scanning technology is contributing to a better understanding of breastfeeding and the baby's movements in the womb.