The United States now uses half as much energy per unit of GDP as in 1950. https://t.co/40Y6yPypX5 — HumanProgress.org (@humanprogress) June 30, 2017
The United States now uses half as much energy per unit of GDP as in 1950. https://t.co/40Y6yPypX5
— HumanProgress.org (@humanprogress) June 30, 2017
RT @humanprogress: The United States now uses half as much energy per unit of GDP as in 1950. https://t.co/40Y6yPypX5
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