It may be a bitterly cold day but there are still children playing on the swings, while other people are walking their dogs.

BBC: Andrew Carnegie: The man who gave it all away

At the same time, Europe and North America experienced bitterly cold winters in what has come to be known as the Little Ice Age.

ECONOMIST: The sun has gone quiet

But he and his generals underestimated the endurance and valor of the Russian people, as well as the bitterly cold winter conditions under which they would be fighting.

FORBES: Declining Populations Make Peaceful Neighbors

Although bitterly cold on Sunday, the weather is expected to be calmer then.

BBC: Snow and sleet forecast for Northern Ireland