Wie weet hier meer van.
Antwoord staat er toch onder? Of is dit wellicht later toegevoegd?
"Experts are still baffled, saying they need a day to analyse the snow, while environmentalists claim high pollution levels in Stavropol caused the event.
A similar incident took place some years ago in Russia's Far East, though climatologists say this was caused by a dust-storm mixing with snow in the clouds."
