That is too short of a time frame. Millions of years is more appropriate. The global maximum occurred 55 million years ago - far far hotter than today and no humans to blame it on.
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55 million years ago
The Palaeocene/Eocene extinction. A sudden rise in greenhouse gases sends temperatures soaring and transforms the planet, wiping out many species in the depths of the sea – though sparing species in shallow seas and on land.Read more: Timeline: The evolution of life
Think it might be better and cheaper to address climate change factors instead.