The New Yorker just ran an article with the catchy title: "The Sixth Extinction"

I haven't had a chance to read it yet but the New Yorker is renowned for their impeccable fact checking. There may be little in it members of this tribe are not already aware of but it may be a useful reference.

www.newyorker.com/reporting...ct_kolbert

I hope this is helpful and welcome any comments and questions. I should be able to get through it in a couple of days.