The Pseudoscientists

Belinda and guest Chris Heath, filling in for Jack (and Rachael and Tom), chat deadly solariums, black holes hiding hydrogen from astronomers, and a new Google star visualisation program. Plus, Jargonauts takes a look at the word "affect", and your answers to last week's question on labelling genetically-modified food are poured through. Next week's question: "What level of scientific qualifications should science policy makers hold?"