'Gerbils not rats' carried the plague to Europe
Scientists in Norway believe gerbils not black rats are to blame for outbreaks of the bubonic plague across medieval Europe.
Researchers have found a correlation between outbreaks in Europe and warm temperatures in Asia causing the gerbil population to rise and fleas to spread.
DNA from skeletons across Europe may reveal the answer.
The BBC's Richard Lister reports.
24 Feb 2015
- From the section Science & Environment