I think there was a shift in the term news people used, and I think it happened as the topic became more politicized. That's worth making note of, since it like

I think there was a shift in the term news people used, and I think it happened as the topic became more politicized. That's worth making note of, since it likely is a technique intended to shape opinion. Someone somewhere decided Climate Change was more marketable. But the news media isn't scientists, and from what I've found, they used Climate Change a long time ago, well before the media did.