from Ethan Mollick | by Ethan Mollick

All space dystopias at once: human blood protein combined with Martian rock, makes a substance as hard as concrete. Adding in tears just makes it stronger. This table compares the ease of harvesting astronauts for their blood, sweat & tears to the alternative of farming spiders.

This is not a joke, the scientists tested it and it works. Paper: t.co/0d9xwK2Oha