These same climatologists were predicting a new ice age due to pollution as late as 1979.  What happened?  Oh yes, anti pollution activists were winning their cause and thus finding themselves irrelevent.  They needed a new emergency to justify their existence.,(reply>), Just look at the weather data. It shows, climate change is real.<br>Btw. it wasn't really the same people. The concept of climate change made by humans was introduced to the world in the 40ies.