> The toilet on the ISS cost $20,000,000+. One of them. The first of anything is expensive. The next one will be cheaper. The one after that will be cheaper st

> The toilet on the ISS cost $20,000,000+. One of them. The first of anything is expensive. The next one will be cheaper. The one after that will be cheaper still. If we're not willing to go extinct on Earth (and I'm not), sooner or later we'll need toilets that work outside Earth. Why not get started?