Everything I read is about is science looking for evidence that it's happening and man made. I don't read much of anything about science looking for evidence that it either isn't happening or isn't caused by man.
When looking at changes in the ranges that various plants and animals inhabit, that could be evidence for or against.
When looking at changes in glaciers or sea ice, that could be evidence for or against.
When measuring temperatures of the atmosphere and oceans, that could be evidence for or against.
The majority of the evidence says that global warming is happening, and that human activities do play a role. "Global warming is happening" and "human activities contribute to warming" are pretty much settled science. This doesn't mean "accepted as unquestionable truth" but that profound contradictory evidence would need to be found.
How much warming will happen, how quickly, and what the consequences will be are matters of less certainty. Unfortunately the lesser certainty occurs precisely where answers are needed in order to make socio-political decisions regarding what steps, if any, should be taken to limit global warming and mitigate its effects. People who insist that warming cannot possibly be happening or that human activity cannot possibly be a significant cause are equally unhelpful as those who insist that "the science is settled" and drastic measures must be taken immediately without regard to the non-climatic consequences.