From howling blizzards to the gentlest and most delicate snowflakes, Let It Snow celebrates snow in all its forms.
How snow is produced, different types and the weather conditions that cause it.
Take a look at some spectacular images from Gordon Buchanan's Polar Bear Family & Me.
We went to the ends of the earth for this to test your Arctic and Antarctic knowledge.
What can be more inhospitable than the cold, white emptiness of the frozen polar tundra.
Polar pictures from the programme Vanishing Antarctic.
A land of giant icebergs, huge distances and endless snowfields.
Hurtigruten ferries sail the Norwegian coast, travelling through breathtaking scenery.
Read about the Arctic explorers who risked everything to reach the top of the world.
What impact will global warming, holes in the ozone and atmospheric haze have?