This article has space folks up in arms. The article notes ISS water recycle efficiency = 98% (BTW its solar powered). Over decades with a lot of people 2% adds up fast - but where does that 2% go? These days we hear non-stop talk about nuclear reactors on the Moon. I have to think that having a nuke in the loop might fix that. Or we could drop a few comets where we can mine them. But c'mon - if we're talking about a million people on the Moon then we've already shown that we're prepared to think big. Go big or stay home. Just sayin' @NASAAdmin @NASAMoonbase