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#1 | ||
Dipped Squirrel Operative
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Quote:
Last times a climate change lead to mass extinction was a drastic change in the permian (but it took millions of years), and the (most probable theory right now) some asteroid drastically changing the climate fast and drastically, towards the end of the cretaceous. What we observe now has no comparison in earth's history. When it quacks and walks like a duck, it probably is one. There could only be two theories that it is not man-made - one is the sun, but changes in the sun's radiation cycles and 'behaviour' have most probably happened before without what we see now. Our sun is a relatively stable star, even over millions of years. - another theory could be the earth's magnetic field getting stronger or weaker, the latter might indeed change the sun wind's intensity reaching the earth because it is not being deflected. But even here the earth's core has changed its direction and revolution several times in earth's history without having much influence on the latter's surface, or climate.
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>^..^<*)))>{ All generalizations are wrong. |
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