Mass Extinction and the Structure of the Milky Way
arxiv.org
arxiv.org
Original submit, 350+ points:
https://news.ycombinator.com/item?id=14289212
Here's an excellent interview of Jonti Horner by John Batchelor on this topic (free podcast):
https://audioboom.com/posts/4827661-mass-extinction-and-the-...