First of all, they discourage their readers from actually getting a college level science education. Readers are told that they will be laughed at and persecuted for their beliefs. After making sure that their readers will never know the truth about what "science" actually says, the important hypotheses and theories of geology and biology, like plate tectonics, are completely misrepresented or selectively used, quotes are taken out of context and scientific terminology is used in its vernacular sense ( theory , anybody?
). Personally distressing for me is their use of Mount St. Helens as "proof" that the biblical Flood destroyed the dinosaurs.
Which is great, as long as you ignore all that iridium .