With risk levels high across Switzerland, an expert explains why the wildfire season started early in Europe this year and what can help.

As wildfires rage across parts of Europe, the WHO has warned of a sharp rise in wildfires across the region and their growing toll on human health.

Stefan Doerr, the director of the Centre for Wildfire Research at Swansea University, speaks to FRANCE 24 about some of the reasons why fire seasons across the world seem to be…