Welcome back for Dr Pod No. 14. This week we have some research looking at the effects of magnets in the treatment of migraine, how bubble blowing is linked to language development, how 4x4 drivers may be putting others at risk (not just through their fuel emissions) and how cocaine hijacks the craving brain. We also discuss the development of computers that can read your emotions, the basis of ‘senior moments’ and some controversial research that may increase evidence for a biological basis for homosexuality. Finally our ethics corner looks at a new aspect of stem cell research.