Since 13,000 zj are available on the earth, given that we can tap 2,000 zj, knowing that the world needs 0,5 zj per year and that it will provide us 4000 years of clean power, why would we enslave us to oil, gas...?
What is a zj and where can we tap 2,000 of them? And can I fill my car with zj's?
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