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A comment on Temperatures in France cross 45°C threshold for first time since records began. Parent comment

Re:Temperatures in France cross 45°C threshold for first tim... by jay_kyburz on Sunday June 30, 2019 @08:52PM (#20321613)
I imagine that in some distant future we are going to have to have near perfect recycling. Human waste, and even our bodies will have to go back into these closed ecosystems.

I wonder if the energy from the sun is enough external input to sustain human life.

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Re:Temperatures in France cross 45°C threshold for first tim... by chronolitus on Tuesday July 09, 2019 @10:42AM (#20392227)
It's certainly possible, since earth doesn't need much external input other from sunlight to sustain life.

The question is, how scaled-down a self-sustaining ecosystem can we create and manage, which is capable of sustaining human life?

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