Global warming is a serious issue that will have long-lasting effects on our planet and impact not only our lives, but the lives of our children and grandchildren as well. But, if reducing our carbon footprint means having to ride in crowded buses and trains with sweaty strangers that stink, then it's worth burning fossil fuels for hours a day jammed on the freeway heading back and forth to work alone in your car with the air conditioning cranked all the way up.