The amount of labor that once bought 54 minutes of light now buys 52 years of light. https://t.co/bgXvSur3yQ — HumanProgress.org (@humanprogress) June 30, 2017
The amount of labor that once bought 54 minutes of light now buys 52 years of light. https://t.co/bgXvSur3yQ
— HumanProgress.org (@humanprogress) June 30, 2017
RT @humanprogress: The amount of labor that once bought 54 minutes of light now buys 52 years of light. https://t.co/bgXvSur3yQ
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