dear mr. anti-science,
i don't have a my freshman year zoology book with me at work (i kept it b/c it was an unusually great textbook), but i will stipulate to your fact that polar bears have been around for 25 mill. yrs., for the purposes of our discussion, and ask: how does that "evidence" advance, what i guess is your proposition that polar bears will somehow just adapt/evolve moving forward so as to enjoy hundreds, thousands, or 25 million more years when temperatures continue to rise due to global warming? humans are not just going to start using less fossil fuels are they?
oh, i know, "hey man, that's just what natural selection is all about?" except you forget to emphasize the word NATURAL.
i think i might be dr. science, at least to you.