text: All in all, leaving your car at home and taking a bike to work instead can have many health benefits but also many environmental benifits, so next time you think about bringing your car to work, think of the polar bears and the future of the environment.            The believe of the "Face on Mars" being created by aliens is unlogical. The "face" is a simple landform. Why would NASA not tell the people there is aliens? There are images to prove that it's nothing but a natural landform.