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That xkcd comic should go back 400,000 years instead of just 20,000.
by excessive 7y ago
That xkcd comic should go back 400,000 years instead of just 20,000.
- goda90 7y agoEh, it's really about the relevance of temperature fluctuation to civilization. Sure humans existed earlier, but we know less about their relationship with the world around them the further back we look.
- deleted 7y ago[deleted]
- excessive 7y agoThat might be what it was about, but it could've been about more. I don't think anyone claims humans were significant to CO2 or temperature more than 200 years ago, why go before that to 20,000 years and stop there?