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Note the "noisiness" of the data.



Humans may annually produce very little CO2 compare to natural sources (e.g. forest fires, volcanoes), but the cumulative effect of human activity over the past two centuries seems to have raised the CO2 concentration in the atmosphere by a significant amount. That's got to be a cause for concern.



I find it amazing that just 14,000 years ago (or 8,000 years before God created the universe ), the sea level was a whopping 100 metres less than it is now. Wow!



That's a stunningly rapid change. Some people call mountain glaciers the "canaries" of climate change.



The Sun exhibits quite a bit of variability, too.