Okay, I was just going to reblog this without commentary, but I can't keep this to myself. I'm a PhD student in environmental science and this is my fucking highway.
The first published study about climate change (that I am aware of-- feel free to point out if there's an older one) is an 1896 paper by Svante Arrhenius. He pointed out the link between the greenhouse effect and changes in atmospheric CO2.
Plate tectonics, which the geoscience community now recognizes as near indisputable, was a fringe theory until about the 1960s.
Just in case anyone thought that climate change was a "recent fad" in research.