I believe the scientists that say we are affecting the climate.
I always show this to people and never heard it mentioned by people. Although it's not a very good proof of anything because who said nows that time, who said it won't be instantanious when the time comes, and who said it won't be clothing.
.כתובות ל
Is your denial based on your religious beliefs?
I think what I've commonly heard is that it can't be because God promised in the times of Noah that there won't be another flood (in the whole world at once). Although I'm not sure why this isn't considered a man made flood.
ETA: actually maybe because of the Jewish belief that people can't change the outcome of anything so it's like God said there will be a flood.
Although you can say maybe it will get warm without flooding.
And like someone commented below that it's not flooding the whole world ( I wasn't sure so didn't make to mention that point but left it in parenthesis)