Some scientific issues are so complex and counterintuitive that they cannot be well understood by readers of popular magazines. Nonetheless, stories about these difficult scientific issues are frequently the ones that these readers would find most fascinating. Unfortunately, this means that some of the scientific stories that would be most interesting to readers are usually not covered in popular magazines since__.
The conclusion of the argument is strongly supported if the statement "editors of popular magazines generally do not approve stories about issues that cannot be well understood by those magazines' readers" completes the passage.