Natural and unnatural disasters....

Oops.

Trojan asteroid in Earth's orbit.

Well, at least he admits it: Sen. Lindsey Graham (R-SC): “We’re not generating enough angry white guys to stay in business for the long term.”  So, back to the Dark Ages!

Krugman.

We're all gonna diiiiiieeeee.....By diseases:  TB.... West Nile virus.... Hantavirus.... or by extreme weather that causes  flooding, food wars, or by a Romney presidency....

Update:  The Heartland virus....

Update 8/31: Global warming...