Humans simply cannot evolve at the pace of snakes and toads. Fewer offspring, more years between generations. But there is ongoing work on human evolution. See Harpending et. al. for one example.
Most of "us" are right about a lot of things, but on the topics of evolution and global warming, "we" are setting ourselves up to be made fools of. Nature is what it is, and no ideology can undo that.
I really can't get on board with thinking that humans cause global warming. If the earth is heating or cooling - that's a fact. Whether or not people can cause it is not, in my opinion.