Thomas de Groot <tho### [at] degroot org> wrote:
> I cannot deny my training :-)
>
> This is a view of Earth about 3.0 to 2.5 billion years ago. A very
> different place indeed. No continents to speak of, only volcanic
> islands; oceans with huge quantities of dissolved iron (greenish tint);
> atmosphere without oxygen and lots of methane and othe toxic gases
> (reddish tint); a Moon which is closer than today (huge tides); days a
> bit longer than today by a couple of hours.
>
> A most significant change will come at about 2.4 billion years ago: the
> Great Oxygenation Event. That will be my next scene in this series.
>
> Thomas
beautifully executed and nice subject.
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