Do you know about ted.com? Tons of great lectures!
I am not familiar with it but will check it out
if you're interseted in more on intergalactic toileting, seehttp://spaceflight.nasa.gov/shuttle/reference/shutref/orbiter/eclss/wcs.htmli also remember ilan ramon discussing this in a documentary about his training. they actually practiced sitting on toilets with cameras in them so that they could see from underneath if everything is aligned properly (little room for error in such cramped quarters). they also wear diapers during takeoff/landing.