No Summer

The numbers given for the last eruptions of Yellowstone caldera in the article [1] about Yellowstone possible eruption are "2 million, 1.3 million, and 640,000 years ago". This would make us due about now if this is the result of a cycle.

Even a minor eruption would devastate wheat and other crops for thousands of miles but the long winters that would follow not counting the possibility of other eruptions would continue devastation around the world.

In the early 1800 we had some of the worst earthquakes in the history of America but there were also some volcanic activity that caused cooling by 1816 with little or no summer.

This caused over 200,000 in Europe to die and as many as 100,000 Irish deaths . 1300 years earlier there was a similar cooling event blamed on volcanoes.

A more extreme event took place in the early 500 A D period and some estimates say millions died with cannibalism in areas of China.

Today with about 30 days of grain world wide in the pipe line 5 to 10 years of no summers would cause the death of billions even without economic, social and political collapse which would be inevitable.

Wheat storage in America is at an all time low. As a civilization we have never been more vulnerable.