“It’s understandable why humans stopped living in space in the 2020s. How can you think of the stars when the seas are spilling over? How can you spare thought for alien ecosystems when your cities are too hot to inhabit? How can you trade fuel and metal and ideas when the lines on every map are in flux? How can anyone be expected to care about the questions of worlds above when the questions of the world you’re stuck on – the most vital criteria of home and health and safety – remain unanswered?”
