Frozen Planet

At the North Pole, the sun returns after six months of darkness.

Spring arrives in the polar regions, and the sun appears after an absence of five months.

Polar animals race to rear their young during times of plenty under the midnight sun.

Autumn brings epic journeys for polar wildlife as most hurry to escape the refreeze.

The story of the few extreme survivors who remain in the polar regions during winter.

What draws humans to the coldest and most hostile reaches of our planet?