In Siberian permafrost, a zombie virus that had lain dormant

for 50,000 years has been revived by researchers. 

More than a dozen ancient viruses were discovered by 

 researchers from the French National Center for

Scientific Research. The depressing

discovery was made in Siberia's deepest ice cores.

13 previously unknown viruses that had been dormant

in the ice for thousands of years and are currently being revived were found by the preliminary inquiry.