Re: David Deamer's Ideas

Tom Hendricks wrote:

Life is that reaction to the sun heat
cycle (you call it hydrological) that is the most stable.

The sun is the energy source for most life on earth,
directly or indirectly.

The other main possibility for an energy source is
geothermal energy - mosly resudual energy from the
earth's formation - which fuels most of the rest
of life on earth via subterranean vents.

Some OOL enthusiasts do think geothermal energy was
important at the origin - but IMO, the idea doesn't
fit in terribly well with the other clues we have.

As to why we have life - and not, say only wind
and rain, dissipating energy gradients on earth,
IMO, that has to do with how benign the environment is:

If life can arise and persist at all, it tends to
spread into every nook and cranny, eventually feeding
off every energy gradient it can find - putting up
hydro-electric dams to catch the rain and turbines to
catch the wind - and so on. If not, we have a
situation like the one on Venus: just wind and rain.
--
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