Ever want to know how old the Grand Canyon is?
Well, don't ask the park services. They can't tell you.
Why not? As you might expect, it's due to pressure from Bush appointees, ignoring the protests of its own scientists as well as every scientific organization.
The National Park Sevices also sells creationist books, defending the act by saying that their book store is like a library and intends to give the broadest view possible. Of course, when the book was adopted in 2003, they rejected 22 other books, adopting only the creationist text. Furthermore, park policies as well as law reveals that the "park bookstores are more like schoolrooms rather than libraries."
When the book was adopted, it was promised that it would undergo a review to judge its merit. Three years later, and no review has even begun.