The difference is called "empiricism". God is defined as something supernatural and unexplainable. Science is the opposite. Why do you think this is a good comparison?
The science behind climate change is simple and more than 90% of the worlds experts in geology, ecology, climatology, oceanography, chemistry, physics, etc all are in agreement that global warming is real and caused by humans. Here's a FAQ from the times if you'd like a reference https://www.nytimes.com/article/climate-change-global-warmin...
But let me ask you this. Can you think of a single thing you can't discard with this logic? One single thing.
By the way, much of our previous research on climate science has already been falsified, for them to be substituted for theories which show even stronger evidence for man-made climate change.