added 2007 Sat Jun 2 21:41:34 by capn_caveman
Astrobiologists have a strong interest in understanding the conditions that prevailed on the early Earth, but the record for the first 650 million years of Earth history is gone. The earlier stages that made our planet fit for life are not recorded in the rocks we have today.
Astrobiologists have a strong interest in understanding the conditions that prevailed on the early Earth, but the record for the first 650 million years of Earth history is gone. The earlier stages that made our planet fit for life are not recorded in the rocks we have today.
