How can scientists accurately know the global temperature 120,000 years ago?

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Scientist claims that July 2023 is the hottest July in 120,000 years.
My question is: how can scientists accurately and reproducibly state this is [the hottest month of July globally in 120,000 years](https://www.theage.com.au/environment/climate-change/the-hottest-july-in-120-000-years-what-s-in-store-for-australia-this-summer-20230719-p5dpm3.html)?

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Anonymous 0 Comments

They do **not** accurately know “global temperature” 120 000 years ago.

Furthermore, they do not accurately know it 120 years ago.

Furthermore, they do not accurately know it today.

Well, okay, maybe for today they do not know it *precisely*.

Those who claim are lying or… Nudging the truth a bit… Or a lot.

So, can not explain what is not true.

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