Yesterday, I had the pleasure of watching History Channel's "Life After People," which was better than any movie I've seen in months. I was mesmerized. It described, with fascionating visuals, how long it would take for each important aspect of civilization to disappear, if no humans existed anymore. I was surprised to learn that all lights on the planet would go out (except the ones around Hoover dam) within two days, because humans are required to feed the power plants that feed the electrical systems. Humans are also necessary for regulating water levels in underground subways, as well as rivers. Within a few days, the subway system in NYC would be a river, as would systems in every major city. Vegetation would crack the sidewalks, highways and brick or concrete buildings. Sealant around windows in skyscrapers would expand and shrivel, causing all the glass to crack or explode. Overall, civilization, including all written and digital records of all knowledge, would disappear in the blink of an eye. It was fascinating. Nature versus civilization has always been one of my favorite themes in life.
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