31 Elon Musk says Mars can wait — SpaceX shifted focus to building a self-growing city on the Moon (archive.ph) posted 119 days ago by Mpetey123 119 days ago by Mpetey123 +31 / -0 79 comments share 79 comments share save hide report block hide replies
Worse, asbestos. People laugh at the Cave Johnson bit in Portal 2, but it really is like breathing in tiny, sharp fragments of broken glass.
Earth dust at least has erosion and weathering to round off the edges.