In most parts of Europe, Russia and Northern a partial solar eclipse is observed today. People can feel how temperatures drop and dusk seems to begin even though the day has just begun… Time to remember that the sun powers our planet.

This Sankey diagram from the GEA 2012 report (Global Energy Assessment – Toward a Sustainable Future, Cambridge University Press, Cambridge UK and New York, NY, USA and the International Institute for Applied Systems Analysis, Laxenburg, Austria) page 773 shows that the “amount of solar energy available on Earth (estimated at 3.9 million EJ/yr) is many times the present human energy use (~528 EJ in 2009)”.

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