Sahara dust makes the sky misty as a cablecar is seen above a piste in St. Moritz
Sahara dust makes the sky misty as a cablecar is seen above a piste at the Corviglia ski area, as the spread of the coronavirus disease (COVID-19) continues, in the Alpine resort of St. Moritz, Switzerland February 23, 2021. REUTERS/Arnd Wiegmann