SKEPTIC Magazine issues a retraction...said they were duped...
Fact Checking 101 How Skeptic magazine was Duped by an Environmental Activist Group
Unfortunately, in our eagerness to find additional examples of the inappropriate intrusion of religion in American public life (as if we actually needed more), we accepted this claim by PEER without calling the National Park Service (NPS) or the Grand Canyon National Park (GCNP) to check it. As a testimony to the quality of our readers, however, dozens immediately phoned both NPS and GCNP, only to discover that the claim is absolutely false. Unfortunately, in our eagerness to find additional examples of the inappropriate intrusion of religion in American public life (as if we actually needed more), we accepted this claim by PEER without calling the National Park Service (NPS) or the Grand Canyon National Park (GCNP) to check it. As a testimony to the quality of our readers, however, dozens immediately phoned both NPS and GCNP, only to discover that the claim is absolutely false.