I've found this stuff fascinating ever since I saw the stromatolites [1] at Shark Bay in Australia. They evolved 3.5 thousand million years ago. That's closer t

I've found this stuff fascinating ever since I saw the stromatolites [1] at Shark Bay in Australia. They evolved 3.5 thousand million years ago. That's closer to the formation of the earth (4.5Gya) than now. It was thousands of millions more years before even cellular life, let alone multicellular life formed, and we know so little about it. There's so much to read about this root end of the taxonomic tree, but unfortunately scientists seem to be pretty unsure about everything. [1] http://en.wikipedia.org/wiki/Stromatolite http://en.wikipedia.org/wiki/Stromatolite