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Re: Supernova link to Rancholabrean fauna extinction?
On 7/22/2011 2:13 PM, email@example.com wrote:
From: Ben Creisler
The question of whether humans were agents in the extinction of the
macrofauna in the Americas may be one more of technology (Clovis weapons)
than physical presence.
This general debate would benefit greatly from a consensus definition of
If climate change has stressed and reduced an animal population to 2
breeding individuals, and humans knock them off, is that a "human-caused
There seems to be no agreement or discussion on this point...