There is, the article links to a source, https://www.scientificamerican.com/article/how-a-1-900-year-..., which you need a $5/month subscription for.

I'm sure hidden in the links is a link to the paper, which you can pay to get the no-nonsense study.

This is the third or fourth degree of scientific reporting; first is the paper, second is a news report, third is adult pop sci magazines, fourth is youth pop sci magazines. Pick your poison / preference.

Do you pay for satisfy your curiosity?

In fact, that institution is non profit and publicly funded, so what gives...

Anyhow reading the piece with Brave showed me no ads whatsoever.