Could Global Warming Release Smallpox

Could Global Warming Release Smallpox? A team of French and Russian researchers recently found a small amount of smallpox DNA in 300-year-old frozen mummies from Siberia. The small amount of smallpox DNA they found is said to be quite harmless. But it makes me wonder what nasty things may be hiding in the frozen arctic. Nasty things just waiting for the warmer climate to release on an unsuspecting world. Who can say?