Can the new variant of the Covid-19 virus be stopped?

We look at the growing number of European countries banning travel from the UK, and hear a medical expert's opinion on prospects for stopping the virus in its tracks.

Also in the programme, a doctor looks back on the Year of the Plague; and new archaeological evidence that suggests early humans may have hibernated to cope with winter cold and food shortages.

(Picture: France and other European nations ban travel from UK. Credit: EPA/ANDY RAIN)