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Is it possible to "mine" the air, e.g. for carbon?
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How long after an extinction of humanity would it take for sentience to re-arise?
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Is it "better" for the environment to urinate in your yard than into a toilet?
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What is the "lifespan" of various types of materials? Steel, Plastic, Concrete, etc?
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Is it possible to "mine" the air, e.g. for carbon?
5
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10
9
8
7
6
5
4
3
2
1
0
How long after an extinction of humanity would it take for sentience to re-arise?
2
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9
8
7
6
5
4
3
2
1
0
Is it "better" for the environment to urinate in your yard than into a toilet?
1
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10
9
8
7
6
5
4
3
2
1
0
What is the "lifespan" of various types of materials? Steel, Plastic, Concrete, etc?
0
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10
9
8
7
6
5
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