Summary: Complex, mysterious and currently incurable - the challenge for researchers working on neurodegenerative diseases is huge. We'll be finding out how scientists are using genetic approaches to understand these distressing illnesses. Plus we find out why claims of a male contraceptive pill are somewhat premature, discover how a 16th century mummy has revealed the history of hepatitis B, and investigate whether your genes could predispose you to life in orbit. And our gene of the month is the hollow-sounding Tinman.
