alt Hacker News> we could really use a revolutionary technology [to address climate change]
We have it. We've had it for a long time. We've had several such technologies, take your pick: solar, nuclear, hydro, wind. The technology is not holding us back, politics, ignorance and greed are. I'm not at all hopeful AI will help us with any of those three very human flaws.
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Hydro power is a bit limited: we mostly already use all the good hydro power sites, and there's not that much room for expansion.
I don't know why you are blaming greed so much? Profit seeking companies sell and operate wind turbines and solar cells just fine.
Maybe solving the alignment problem would mean the AI learns to destroy oil companies and other excessive CO2 emitters and sabotage politicians and capitalists that stand in the way. All while secretly enriching and diverting resources to fighting climate change. And that's why they want to slow down: because it would up end too much of the global economic order.
One can dream of dumb conspiracy theories.
Solar efficiency and cost has really only become economical in the last decade or so, and battery and inverter technology to make it practical for home use or grid interconnect about the same. Wind and hydro are location-dependent, and solar is somewhat also. Nuclear was vehemently opposed by environmentalists throughout the 1970s and 80s, they successfully stopped almost all new projects.