Humanity will become a Kardashev Type I (planetary) civilization, harnessing roughly all energy available on Earth, by 2111.

Pending ●●●●●

“Calculating the energy output of the planet, we can estimate that we will attain Type I status within 100 years.”

Said on: 15 March 2011 · Book Physics of the Future (2011), excerpt published by NBC News
Source: Take a test drive through the next 100 years · NBC News
Should come true: 2110s
How sure they sounded: we can estimate that we will
Categories: Energy
Importance: 5 of 5 · Reaching planetary-scale energy use would be a civilization-scale transition.

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