An Eschatological Taxonomy

Jamais Cascio organizes into a taxonomical structure the various eschatological risks and scenarios we face in these coming years:

A "Class X" Existential Risk: Planetary Elimination (example: post-Singularity beings disassemble planet to make computronium)
Global civilization destroyed; all humans dead. Ecosystem destroyed; all species extinct. Planet itself destroyed.

Hat-tip Boing-Boing