Speaking of space toilets, this is a fascinating survey of the difficulty of the problem, and a reminder of how much we get for free on Earth and why it is quixotic to talk of visiting Mars.
mceglowski.substack.com/p/lets-talk-...
mceglowski.substack.com
A weekly-or-more deep dive on technical topics surrounding Mars exploration, from microbiology to rocket science and everywhere in between.
