This Is All Beyond Me...

...but it kinda shows you how fragile life (including us) on earth can be:

Gamma-ray burst 'hit Earth in 8th Century'

"If a cosmic explosion happened at the same distance as the 8th Century event, it could knock out our satellites. But if it occurred even closer - just a few hundred light-years away - it would destroy our ozone layer, with devastating effects for life on Earth."

And you're worried about a few degrees of warmth.

Be good now. We don't want the gods to be mad at us.