This paper is concerned with three types of natural climate changes: permanent (or continuos) due to the atmosphere cleaning from the carbon dioxide by plants during 3,5 billion years; self-exited periodic (or oscillatory) due to feedbacks between the Sun and the geographic shell of the Earth (2-3 per million years); catastrophic (when some heavenly body collides with the earth surface). The anthropogeneous climate change is now happening due to "backward running" of the permanent climate change caused by the anthropogeneous atmosphere pollution with CO_2 to the concentration, which existed 20 million years ago. Now is the deadline to avoid selfannihilation using immediate replacement of all the present energy sources by the wind-hydrogen power industry.
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