2023 https://books.google.com/books?hl=en&lr=&id=k_6pEAAAQBAJ&oi=fnd&pg=PP9&dq=%22catastrophic+threat%22%7C%22existential+risk%22%7C%22existential+threat%22%7C%22end+of+civilization%22%7C%22end+of+civilisation%22%7C%22collapse+of+civilization%22%7C%22collapse+of+civilisation%22%7C%22survival+of+civilization%22%7C%22survival+of+civilisation%22&ots=cQLdYbDtwY&sig=-2IFV20ooOdO_GsYxee-ui7uRm0 Book