Did life on this planet begin only after
a relatively long planetary evolution,
until suitable environments emerged that allowed life to gain a toehold, or was the
cradle of life ready and rocking when Earth
itself was but an infant? An answer may come
from a paper online in Nature by Nutman
et al. that analysed 3.7-billion-year-old rocks
in the Isua Greenstone Belt in Greenland.
https://doi.org/10.1038/nature19429
http://www.nature.com/nature/journal/v537/n7621/full/nature19355.html
https://doi.org/10.1038/nature19429
http://www.nature.com/nature/journal/v537/n7621/full/nature19355.html