That is Tenerife, almost hidden under the cloud of sand that is sweeping in from Africa. Another calima. The temperature has shot up to 40C, everyone is coughing and sweating, and it's impossible to sleep without a fan going full-blast.
The Canary islands used to get two or three calimas a year - now we get about twenty. Why?
Because the fragile surface of the Sahara Desert is being destroyed. Camels' feet don't break through the crust but the heavy-duty tyres of lorries do. Tourists in 4x4 vehicles add to the damage, as do cross-desert races in off-road vehicles and on powerful motorbikes. Then there is over-cultivation and unauthorized open-cast mining, all of wich are doing irreparable harm.
Does anyone care? I doubt it - profit always comes well before the environment, doesn't it?