How National Geographic mishandled the translation of the "Gospel of Judas"

We've all heard the story: how a "lost gospel" has shown that Judas, far from being the traitor presented in the traditional gospel accounts, was actually doing his job by expediting the crucifixion of Jesus at the behest of Jesus himself. He wasn't, so the new story goes, a bad guy after all.

Here, from the Chronicle of Higher Education, is the behind the scenes story of how National Geographic may have used legitimate scholars to distort what the "Gospel of Judas" actually said.