NASA has selected a crew of four volunteers to participate in a simulated journey to Mars inside a habitat at the agency’s Johnson Space Center in Houston.
I'm away right now, and haven't had time to prepare new stuff. So, here's something from the archives again: by which I mean, something written in 2006. It's still pretty interesting (in my humble opinion), but I would definitely do some things differently were I to re-write it today [gliding sifaka below from Demes et al. (1991): read on].