> Here are some questions:
>
> 1. Could early planets, lacking in heavy elements, sustain life?
In the usual scenarios, only H & He isotopes, with slight traces
of Li-7 etc were made in the big bang. C & 0 would have been
negligible, & it's hard to see how you could have life without them.
George L. Murphy
gmurphy@imperium.net
http://www.imperium.net/~gmurphy