Sky over Athens turns orange under Sahara sandstorm

STORY: Greek authorities issued a health advisory on Wednesday (April 24), advising the public to stay indoors, to abstain from physical activity outdoors, to avoid areas with traffic congestion, and to keep windows and doors closed.

Dust clouds are a mixture of sand and dust that come from the Saharan desert, blown by strong winds and traveling large distances, covering the atmosphere in an orange, grey, or reddish film.