Spain's worst-ever wildfire has burnt 500 sq km, including dozens of homes in the city of Avila. ⁣ ⁣ Authorities say the next two days – cooler and slightly more humid – are crucial: with another heatwave coming, they have to bring the fires under control.⁣ ⁣ CGTN's Ken Browne reports from the burnt-out housing of Avila. ⁣ ⁣ #spain #wildfire #avila