21:32Science CafeSeries 1Episode 6BBC Radio Wales Duration: 29 minutes Wed 5th Dec 2007, 21:32 on BBC Radio Wales FM6/10. Adam Walton serves up another slice of Welsh science.GenresFactualScience & NatureFactualScience & NatureScience & TechnologyBrandScience CafeSeriesScience Cafe: Series 1 Source: BBC Online