I have noticed that those who deny any human influence in global warming are very quick to point out that scientists (in general) are always subject to the temptation to compromise their work in order to qualify for research grants etc. It's human nature. Has this happened in climate change studies which point to "human influence"? Can you point us to any specific work on the part of climate scientists which is flawed in this respect, and has been rebutted in a paper which has been submitted to the anonymous peer review process with favorable results?
As above, is there motivation on the part of vested interests (fossil fuel companies, utilities etc) to keep things the way they are? Of course. Are there studies out there funded by oil companies et al which deny a human influence in climate change/global warming, and have these been properly vetted?