Global warming, no, pollution, yes. While I'm not sure that we're affecting the planet's climate, pollution does worry me. Whether you believe in global warming or not, I don't think that there's any disputing that the use of fossil fuels is not good for the environment, because of the pollution it causes. Please understand that I'm not a tree hugging wacko environmentalist, but our environmental stewardship does need to improve, if for no other reason, to reduce pollution.