Could a second genesis have occurred on Earth?

[wolram]

http://aca.mq.edu.au/PaulDavies/publications/papers/FindingSecondSample.pdf

A discussion on the possibility of more than one "life", on earth.

 

[wolram]

silicon based life.

http://www.daviddarling.info/encyclopedia/S/siliconlife.html

 

[wolram]

Im not sure if anyone knows what life is, but life may be prevalent throughout
the universe but without intelligence, this may be the factor, "life","intelligence",
"intelligent life", to understand how a chemical soup can evolve "senses", and
learn to use them, Plants can have "feelings", the venus fly trap comes to
mind, but can it evolve awareness, know its surroundings?