Read the article on the Justinian Plague
http://www.npr.org/blogs/health/2014/01/29/267598868/ancient-plagues-dna-revived-from-a-1-500-year-old-tooth
Discuss how the plague has changed (strain, method of transmission) over time (from the Justinian plague, the black death, and today). Is the plague still a threat to us? Discuss
