The controversy over the hacked emails at one research institute did not compromise the science. There have been at least three investigations of that situation and none of them concluded anything that affected the science. That was just one of many institutes, and the data still stands.
Climatic Research Unit email controversy - Wikipedia, the free encyclopedia
The research on global climate change has been ongoing for decades, and involves many disciplines. Ice scientists like Lonnie Thompson at Ohio State university:
http://en.wikipedia.org/wiki/Lonnie_Thompson
Dendrochronologists and many others all are involved. You seem to think they are motivated by popularity or are only in it for the money; while I'm fairly sure that they are in it for the science itself. Lonnie Thompson has spent more time nearly freezing to death than almost anybody alive today, and his treasure is thousands of cylinders of ice in a freezer.
By the way, one of the best timing markers in ice all over the world is the radioactive fallout from all the atmospheric nuclear tests. In some places that layer of ice has now melted away -- why would that be, I wonder?