The bubonic plague is making a terrifying comeback, according to experts.
In the 1300s, the Black Death wiped out an estimated 60 per cent of Europe's population. It was so cataclysmic that some studies linked it to the Little Ice Age, which is thought to have been caused by millions trees springing up on farmland abandoned by the dead.
Dr Anna Popova, Russia's top doctor, warned of the threat - claiming the long-dormant illness was fast becoming a "risk" to public health because of global warming.
