[fishercs]

http://www.nature.com/articles/ncomms13332

Here's a link to the actual paper, the times article read more like a footnote.

[UhUhUhUh]

Thanks for the link. I hadn't realized the enormous amount of matter involved in a pyroclastic flow... And I find solace in well documented and articulated articles as this one.

[Grishnakh]

Thanks for the link!! Mods: please replace the NYT paywalled link with this one. It's free, and it's far more useful too.