Incredible pictures show the skies over Athens turned orange as dust clouds blew across the Mediterranean Sea from North Africa, engulfing the Acropolis. Strong southerly winds carried the dust from the Sahara Desert across southern Greece, making the Greek capital resemble Mars on Tuesday evening. Experts warn of health risks from fine pollution, while winds are expected to shift and clear the skies on Wednesday. In addition, strong winds have fueled unseasonably early wildfires in Greece, with 25 breaking out in the past 24 hours and three arrests made on Paros island.