You heard that because the followers of the global warming religion had to change their story once it became clear global WARMING might not be actually happening..
so to keep the religion going, they had to say "oh wait..what we meant was, its not necessarily *warming*..we meant to say "climate change"..which could mean some cooling too..but its still bad! no matter what happens, warming, cooling, things staying the same, humans are still evil and are still destyoring the earth, yeah, thats it, thats the ticket."
you will notice you hear "global warming" a lot less lately, the pet phrase is being changed to "climate change"..that way, no matter what actually happens, they can still be right, and they can still divert billions of dollars to their religious projects.
Scot