Pandemics, from the black death of the 14th century to the Spanish flu of 1918 to the SARS epidemic of the twenty first century. Diseases devastated entire societies. Now health officials fear that we may be on a verge of another epidemic and one scientist believes that the culprit my come from outer space and we my have no defense against these extra terrestrial diseases. The result could be catastrophicPandemics, from the black death of the 14th century to the Spanish flu of 1918 to the SARS epidemic of the twenty first century. Diseases devastated entire societies. Now health officials fear that we may be on a verge of another epidemic and one scientist believes that the culprit my come from outer space and we my have no defense against these extra terrestrial diseases. The result could be catastrophic