Any Greeks still doubtful about climate change are becoming more convinced as yet another cloud of dust from the Sahara hits Greek skies.
Athens, known for the pure blue of its Attic sky, is covered in a yellow haze, and people are going around coughing or hiding their mouths behind handkerchiefs.
Things have been even worse in Crete, because its proximity to Africa means the dust is denser, turning the atmosphere bright orange.
We have always had this phenomenon when certain climatic conditions prevailed, but it would occur only occasionally. In the last few years it is becoming more common and happens several times per year. According to scientists, it will probably continue increasing with time, as climate warming becomes more intense.
The dust cloud is not toxic, but it is extremely unpleasant and can cause breathing problems in people suffering from lung conditions such as asthma.
This is what the sky should look like at this time of year!
Letters from Athens 