After the recent years of debate over the appropriate role of creationism-cum-intelligent-design teaching in public schools, it's very clear that there's a conspiracy at National Geographic! Or, perhaps, an effort to educate people as to what evolution means as opposed to how evolution is depicted as a cartoon strawman by those who like to pretend it's a rough "theory." (As Garry Trudeau explained, if you're a creationist, you might want to reject antibiotics that treat evolved strains of tuberculosis and other diseases.)
Biblical literalists can't be swayed by any evidence that the world is older than 5,000-odd years, so there's little opportunity for them to do anything but renounce their faith if they can appreciate the logical consistency in astrophysics, anthropology, geology, or biology. It seems a rigid faith that requires that.
National Geographic has written quite a lot lately about evolution in not too subtle terms. Their latest effort is a TV special that will run on their cable channel in December called In the Womb: Animals. It looks super cool, for starters, showing dolphins learning to swim in the womb and elephants using their trunks before birth. Here's the key point, though: "And watch as fetal features reveal their evolutionary path of these animals when the elephant develops ducts normally found in freshwater fish, and when dolphins show early signs of legs."