100 yrs ago, Martha died....

Sad story. Whenever I read something like this I always harbor this little hope that somewhere there are still living specimens. How do they actually go about saying that there are_none_ of an animal like this? Is it based on time since the last sighting?
 
I have read some accounts of folks claiming to have seen one up in the adirondacks, but it never seems to prove out. There was mass hysteria a few years back for the Ivory-billed Woodpecker 'sightings'. Nothing ever came of that either. But you never know, i.e. the Coelacanth. A bit hard to comprehend the disappearance of 5 billion of anything, except perhaps our tax dollars.

http://www.slate.com/articles/news_...5/05/when_do_they_call_an_animal_extinct.html
 
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I have read some accounts of folks claiming to have seen one up in the adirondacks, but it never seems to prove out. There was mass hysteria a few years back for the Ivory-billed Woodpecker 'sightings'. Nothing ever came of that either. But you never know, i.e. the Coelacanth. A bit hard to comprehend the disappearance of 5 billion of anything, except perhaps our tax dollars.

http://www.slate.com/articles/news_...5/05/when_do_they_call_an_animal_extinct.html

Interesting article. About what I figured.