[Interesting Times]

Toba near-extinction ping...

[zot]

Thanks for the ping. The highs and lows on the temperature chart illustrate the fact there have been many extinctions -- but some living things have survived each extinction. Not gradual evolution, but flourishing intervals punctuated by massive extinctions caused by impacts and also by volcanos. Perhaps the axiom should be modified from "survival of the fittest" to include "survival of the luckiest."