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Why such short term graphs? One of them only goes back 1991, and the longest term only goes back to 1946.

I’d assume lack of quality high resolution data. Weather stations all over the place, with records preserved indefinitely, is a relatively recent phenomenon.

Yes... why!!

Let's go back... ah, I see mile-high glaciers over London.

Global warming did occur in the past as well.

How is that a reason to exclude it from the graph? Surely including it in the charts would strengthen the case for regarding it as a long term problem?

Excluding it subtly suggests that global warming is a short term phenomenon.

I agree with you that it's a long term problem. I won't stop until London is under a mile-high glacier!

There you go

https://xkcd.com/1732/

20,000 years enough?

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