Notice they don’t use meteorologists as sources. What does an “Earth scientist” know about climate change? Man was not even alive 232 million years ago.
The past is a guide to the future. Earth scientists know far more about long-term (thousands or millions of years) climate patterns than meteorologists ever will. There's a big difference between "climate" and "weather." Climate is what happens with weather patterns over long periods of time; weather, the domain of meteorologists, is the short-term study of what may happen next weekend.
When I was in High School, “Earth Science” was the class that all the kids who were too chicken to take physics and chemistry took in order to fill their science requirement, because it was easy and did not involve math in any serious way. As it happens a lot of those students also chose journalism as an elective.