Climate-change content shrinks in US university textbooks

After seeing the figure [1] I'm pretty confident this relationship described is artifact. Rather than comparing raw medians a statistically robust comparison would have been log(sentence counts) or geometric means, and there would not have been a significant change.

The mean number of sentences per decade is presented in the original study [2] and it only increases.

Similarly I find the position in the textbook of the climate context analysis unconvincing.

OTOH there appears to be a move towards including more information about the effects of climate change on biology and ecology rather than just the physical premise/greenhouse effect, so that seems appropriate.

[1] https://media.nature.com/lw767/magazine-assets/d41586-022-04...

[2] https://journals.plos.org/plosone/article/figures?id=10.1371...