In 2006, a book called "The Cycle of Cosmic Catastrophes" was published. Authors Richard Firestone, Allen West, Simon Warwick-Smith.

If you can find a copy (and the cover is pretty silly, but still...) it covers this issue. I don't know why it is making the NEWS now...maybe because it was in a "respectable" journal? Laughing here...

Anyway, the book is pretty interesting. It covers discovery of nanodiamonds, the black mat...etc. So if you can't find the "Science" article, look for the book!