Firefighters across Europe are struggling to bring blazes under control as emergency workers in Greece, Spain and Slovenia grappled with raging fires and evacuated nearby areas on Sunday after a stretch of dry heat in much of the continent. A fire that broke out on the Spanish island of Tenerife this week and was still raging on Sunday has now destroyed more than 2,150 hectares, the regional president said, even as the situation eases in other parts of the country. At the same time, large fires in the Dadia National Park in north-eastern Greece and on the Aegean island of Lesbos were burning o…