Podcast: Astronaut Urine, Fighting With Your Spouse, and Are Beards Going Bye-Bye? By David Grimm, Nadia WhiteheadApr. 18, 2014 , 11:30 AM Can astronauts recycle their urine for fuel? Does a lack of snacks make you fight with your spouse? And are beards going extinct? Science's Nadia Whitehead and Sarah Crespi chat about some of our favorite stories of the week.