Also, checking out the abstract of the paper (https://science.sciencemag.org/content/314/5800/787.long , paywalled, but it must be on scihub if someone has a moment) doesn’t mention extinction of anything. Presumably, predicting the apocalypse would merit a line there, right?
Climate change is real and awful, but hysteric doom-mongering reporting about it does far more harm than good. Compare the D.A.R.E. model of communicating about drugs to people.