So-called Cosmic Rays

The 700 Club just tried to refute global warming by using the phrase "so-called cosmic rays." Are they trying to reserve the possibility that they might have to refute cosmic rays if they're successful refuting global warming? Wouldn't want to commit to anything, after all. Those rays might be Jebus-emenating earth-warming holy-illumination beams that were sent specifically to save the planet. They might not be cosmic at all.