We’ve learned how to pee in space and how to prepare pre-packaged meals, but if we’re serious about long distance inter-planetary travel, there’s still a lot more we need to work out about the psychology and physiology of living and working in zero-gravity. And as we’ll hear, some of what we thought we knew about staying healthy in space could actually prove counterproductive. (Please note this program was originally broadcast on the 4th of August 2013)