text: Therefore, community service is great and all, but shouldn't be required. Instead it should be extra credit to those who need it or to those who simply want to help.Many people believe in conspiracy theories,that may sometimes not be backed by evidence. Some examples of this are Bigfoot or aliens. Another conspiracy theory is of the face on Mars. In 1976 NASA's Viking 1 spacecraft was orbiting the planet, when it came a across something that appered to look a lot like a human face. Many conspiracy theorists believe that this landform on Mars has to do with aliens.