Lack of snow = depression
No snow: In 2016, Russian health authorities feared that a rare lack of snowfall could cause a wave of depression across the country. It was the warmest December in Russia since 1870, and much of the country didn’t seen a single flake of snow. Winter days are extremely short in Russia, as it’s so far north, and people depend on snow to reflect sunlight and brighten moods. “The psychological state depends directly on the light,” said Russian psychologist Baleria Mikulina Telegraph. Officials went on to install extra street lamps and urged citizens to turn on all their lights, hang up yellow curtains, and wear colorful clothes.