Originally Posted by Val
The magazine Rethinking Schools published a scathing critique of the lesson plan in its latest issue, accusing Scholastic of producing "propaganda for the coal industry." They argue that the material "lies through omission" because it doesn't include problems like warming the planet, destroying mountain ranges, killing miners, or causing respiratory problems, to name a few. …

LOL.

And why do textbooks need to be rewritten every year?

Did someone discover a new way of doing math or chemistry?