Barbara Gentry's claims

From this article:

As it turns out, state curriculum makes no declarations about naming and teaching climate change's exact causes. "You'll notice we don't say anywhere that humans are warming up the atmosphere," said Barbara Gentry, secondary science teacher specialist for the Jordan School District. "Students are merely asked to investigate or research the effects of global changes on earth systems."
It's assumed, then, that students examine evidence and data for themselves and reach their own conclusions. At the same time, there's no requirement that science teachers give equal time to scientists who interpret the data differently. Presenting "both sides" of the debate would be appropriate, Gentry said, but not altogether necessary.
"It's very difficult to find materials on the other side of the debate that are science-based," Gentry said. "That comment's going to get me into trouble, but it's true.
"Yes, a good teacher would present all the different ways in which we know why the climate changes. At the same time, current data shows that our climate has never changed this fast before."

I think Barbara should spend some serious time here.