San Francisco's sky turns redSep 132020
A video that, accompanied by the music of 'Blade Runner 2049', has gone viral on social networks.
It shows the sky of the city of San Francisco dyed an orange-red color, giving it a rather apocalyptic air.
The strange phenomenon is due to the smoke caused by forest fires
that recently hit the area, deposited on the city's pollution layer, thus blocking sunlight and causing its diffraction.