The BBC reports that the Forestry Commission has warned that a whole generation of ash trees will die with the unstoppable spread of the ash dieback disease.
Wikipedia describes an Ascomycete, the fungus that causes ash dieback, a chronic fungal disease of ash trees in Europe characterised by leaf loss and crown dieback in infected trees.
The BBC reports that the public are being asked to help in the fight against ash dieback by playing a Facebook game that analyses genetic data on the disease.