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Several questions on evolution, and mutation (rate)

David Faguy, Ph.D. dfaguy at mail.arc.nasa.gov
Wed Aug 28 21:08:59 EST 1996

Brian Williams wrote:

> Wrong!  By most estimates, the UNIVERSE isn't even 20 billion years
> old.  The earth is about 4.5 billion years old, and the earliest life
> forms appeared about 500 million years ago.

The earliest credible claim for life on earth is 3.78 billion ya. I think 
just about about all scientists (in the field) would say that there was 
undoubtedly life on earth at 1.8 or so billion ya. 

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