Sedna, space probes?, colonies? what's next?
Earth is certainly too crowded for solar power to
be sufficient here.
Hardly. 71% of it has no human life at all. We could *float* the solar
collectors. Places such as North Africa are good dry-land alternatives, though
there are political barriers there.
If Earth is not to become a pre-techological subsistence park, it will *have*
to be solar one day.
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