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# There's a lot of energy there to be tapped.
The planet's core is in no danger of solidifying for as long as humanity's around.
(, Thu 17 Jun 2010, 14:56, archived)
# Not while we're not POURING COLD WATER INTO THE EARTH'S HEART there isn't.
(, Thu 17 Jun 2010, 14:59, archived)
# Fair point.
But there'd be fewer volcanic ash clouds, so, y'know, swings and roundabouts...

:)
(, Thu 17 Jun 2010, 15:02, archived)
# Drop in the ocean (ho ho)
The amount of energy extracted is incredibly tiny compared to how much is down there.
(, Thu 17 Jun 2010, 15:17, archived)
# They said something similar about oil.
(, Thu 17 Jun 2010, 15:26, archived)
# We could certainly do some awesome stuff if we used all the earth's geothermal energy.
It mostly comes from decaying radioactive elements. I don't think the Earth is doing anything useful with it.
(, Thu 17 Jun 2010, 16:05, archived)