It was too late to reverse climate change 10,000 years ago.
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As recorded in ice cores from Vostok, Antarctica, the temperature near the South Pole has varied by more than 20 degrees Fahrenheit during the last 350,000 years. There have been peaks of warmth approximately every 100,000 years. The temperature and the carbon dioxide concentrations at the south pole parallel each other. The rise and fall of temperatures gives rise to the ice age/interglacial cycle.
The periodicity is rather obvious and there is nothing that we can do about it.