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  • I am looking at clouds I videotaped out the window of a jet plane. I remember a conversation with a pilot who glided aloft in un-powered aircraft. I asked him how long he could stay in the air without power. "hours", he replied. Then explained that every cloud is an updraft. The trick was to fly to the nearest cloud to regain altitude. Clouds are just the ice that's made when a warm updraft gets cold.

    There must be downdrafts between the clouds we don't see. Do the downdrafts have the same shape? Are they inverted clouds of equal chaos?

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