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I don't believe climate on this planet has ever been static, and it's always warming or cooling - often in wild vacillations. This is the way it's going to be until a large meteor hits us or we're enveloped by the sun in about 5 billion years.
Remember that Ma Earth is 4.5 billion years old!
One way to get a sense of geologic time is to compare it to a motion picture. A movie is projected at a rate of 32 frames per second - each image is flashed on the screen for only 1/32 of a second, giving the illusion of continuous motion. But suppose that each frame represented 100 years...
If we were able to show the movie on a standard projector, each 100 years would flash by in 1/32 of a second. It would take only 1/16 of a second to go back to the signing of the Declaration of Independence. The 2,000-year-old Christian era would be on screen for ¾ of a second. A section showing all time back to the last major ice age would only be less than seven seconds long... And to view a movie entitled "The Complete Story of Earth, from Its Birth to Modern Civilization" you would have to spend sixteen days in the theater, without even a popcorn break between reels.
Chill out, everyone.
