Scientists Design Solar Cell That Captures Nearly All Energy of Solar Spectrum

Re:Scientists Design Solar Cell That Captures Nearly All Ene... by Zigurd on Wednesday July 12, 2017 @02:52PM (#14755388)

In a few years the question will become "How to do geoengineering safely relative to the risks of warming?" The planet may be able to support 9-11 billion people with mostly renewable energy, but perhaps humanity will not get there fast enough to avert risk of hitting a positive feedback level that would commit humanity to far more massive and therefore far riskier geoengineering.

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Re:Scientists Design Solar Cell That Captures Nearly All Ene... by quantum_magpie on Wednesday July 12, 2017 @10:44PM (#14758366)

The planet is unable to sustainably support the current 7 billion people. The only way I see 9 billion fitting in here is if we switch to purely artificial stuff and eradicate all wildlife and their habitat.

The way I see it, the limit is at 1 billion people if we want to preserve current situation, and even less if we want to let the nature regenerate.

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Re:Scientists Design Solar Cell That Captures Nearly All Ene... by Zigurd on Wednesday July 12, 2017 @11:06PM (#14758440)

I don't dismiss the idea that we are past sustainable limits already. But the fact is that increased living standards have not caused commodities crunches yet. Also, stabilizing population is the first step toward a sustainable population level, no matter what the right number is for a world that thinks in terms of a "long now."

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