There is evidence pointing to ocean levels that were 6 meters higher than today's levels. This evidence includes oceanic wear on rocks far above today's high-tide levels on cliffs in Alaska, and old coral reefs that are high and dry above current sea levels.
This shows ocean levels have been much higher in the past and thus the average worldwide temperature must have been much higher. Life adapted, or died out. That's life for you. Attempting to stop climate change is a futile battle, it will happen whether or not you want it to. The rate can be altered, but not forever.
Like I mentioned before, when the Earth heats too much we plunge into another ice age. The Earth is a self-stabilizing system, it will adapt. Perhaps scientists have not surmised the mechanism yet, but it has historically happened, and there's no real reason to believe it will not happen again.
I'm not saying we need another ice age!
Though actually, I would like it. I love winter! Maybe you southern people would learn what it's like living in the cold...Floridians would learn 20C isn't cold enough to turn the furnace on!!
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Courage doesn't always roar. Sometimes courage is that little voice at the end of the day that says "I'll try again tomorrow".
Maturity is knowing you were an idiot in the past. Wisdom is knowing that you'll be an idiot in the future.
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