3.7-billion-year-old fossils may be the oldest signs of life on Earth
   history, and provide support for the view that life appeared very soon
   paper titled “Rapid emergence of life shown by discovery of
   [The 4 biggest milestones in the history of life on Earth]
   oldest widely accepted evidence for life on Earth. Some researchers
   have cited signatures of life from an even earlier time, including in
   Claims about evidence for ancient life have invariably been
   that we had found life on Mars? I think not, but we would definitely
   represent the first examples of life on the planet. Rather, these would
   have to be the descendants of the earlier life forms. Microbes capable
   evolution from when life started to when stromatolites appeared in the
   fossil record. So life either had to start earlier, or evolution is
   century ago, the leaders of the field believed that life began on Earth
   for life further into the past.
   An early appearance of life on Earth has implications for the abundance
   of life beyond Earth. Life on a young Earth could imply that life is a
   that is true, life ought to be abundant in the universe — because there
   origin of life on Earth also could suggest that complex, multi-cellular
   life (including, perhaps, an intelligent and technological species)
   No one knows how life began on Earth. Charles Darwin hypothesized that
   life emerged in a “warm little pond,” but other researchers imagine
   “It means that there is a heightened interest in the search for life on
   years ago, Mars was wet. If life had managed to evolve to produce
   The building blocks of life weren't that hard to put together