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Re: Summary A

Brian Mansur wrote:
> >I've an idea and wonder if I'm the first one to think of it: Make a deep
> >hole (several kilometres) and use the heat difference between down there
> and
> >up here to make some energy.
> Cool idea!  But as with  the recently lost multi-million dollar experimental
> tethered power satillite demonstrates, developing renewable energy sources
> only sounds easy in principle.  Reality (Murphy's Law) invariably makes you

Whoops.  I responded to Brian, but forgot to "respond to
all".  I was just mentioning that using temperature
differences at various depths to produce power has already
been tried in the ocean, and works: it's called OTEC.