by Prof. John Leslie. The first comprehensive survey of potential catastrophes speculated upon by scientists, from comet and asteroid impacts to nuclear or chemical warfare, from ozone layer destruction to overpopulation and poisoning of the environment or the risk of disaster through genetic engineering. Also covers philosophy and ethics. 1996

Paper by Nick Bostrom, analyzing well-known and less well-known extinction risks and related crippling hazards to humanity.

Nonprofit organization dedicated to encouraging scientific advancements to help humanity survive existential risks and possible misuse of increasingly powerful technologies.

Thoughts on the enormity of the cosmos and the life cycle of civilizations, including our own.