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I just finished reading "A Short History of Progress" by this comsymp pinko Canadian Ronald Wright. At some point in his essays he makes the point -- and I can't find the reference -- that humans have managed to light up the planet such that it blazes away in space (my poor paraphrase). It certainly makes this NASA snapshot more interesting.


Something just occured to me. The lightbulb has only been around about 120 years.