A man is almost crushed by his own house in a freak winter tornado in Illinois. Meanwhile, a falling glacier in Greenland unleashes a tsunami-like wave onto watching tourists.
A colony of emperor penguins gather in Atka Bay, on the coast of Antarctica, after three months feeding at sea. They arrive as the sea freezes over and all the other Antarctic animals have left the continent for the relative safety of the sea. The penguins have come here to raise the next generation in their emperor's dynasty, but to do so they will have to work together to keep themselves and their chicks alive through the coming winter: the coldest and cruellest on earth.
Vilka är de mest extrema utmaningarna mellan nordpolen och sydpolen? I denna special utsätter sig Steve för ett urval av de mest destruktiva krafter som djuren behöver bemästra i olika miljöer, från hettan i Australiens outback och den flytande lavan på Hawaii till det inre av en glaciär i Alaska.
The Arctic's late freeze presents unique challenges for Alaskans as they attempt to gather food and resources for survival.
Sir Paul Nurse looks at what science can do to fix our bodies and extend our lives, and also whether it's right to use all the tools and techniques available. Our lifespan is increasing by 2.5 years every decade, but living longer can come at a cost.
In Kavik, Sue Aikens makes a cost-effective hunting weapon using harvested materials. The Hailstones embark on a family harvest.
Fiona Phillips teams up with leading scientists to look at how to eat and drink to good health, and she uncovers some surprising truths. She reveals which cheap, everyday foods can give all the benefits of so-called superfoods at a fraction of the price and why frying can be the healthiest way to cook.
The Marsh Pride of Kenya's Masai Mara is in a unique situation in their history. They have been abandoned by all of the adult males, and just two adult females are left to feed and protect their eight youngsters. The future of the whole family rests entirely on the shoulders of these two mothers, Charm and her cousin Sienna. They need to raise their cubs to adulthood if this great dynasty is to continue, and they all face the great perils of the African savannah.
I denna special som handlar helt om reptiler undersöker Steve vad som gör dem till så effektiva predatorer, från kameleontens långa tunga och krokodilens kraftfulla käftar till ormarnas supersinnen. Till slut får han uppleva bytesdjurets roll när han och teamet blir jagade av en varan på Komodo.
To capture footage of the volcano's molten heart, the aerial team must deal with ferocious winds and clouds of volcanic gas: this is aerial filming at its most extreme. Meanwhile, the cave team is dropped close to the summit.
Tourists in Thailand are totally unprepared when a tsunami crashes into 14 countries in the Indian Ocean, killing 250,000 people on Boxing Day 2004.
Hard lessons must be learned in order to survive during the dark winter in the Arctic.
The leader of a great painted wolf family is growing old, and her power to keep the peace is waning. Tensions are rising, and a feud with her ambitious daughter whose own pack is running out of space threatens to bring the dynasty down.
Naomi heads to the Arabian Desert with her trusty companion Camilla the Camel as a guide. There, she comes face to face with a herd of sharp-horned Oryx.
Robson är i Sri Lanka där han besöker en festival och deltar i en vattenceremoni. Han utmanar också sin mörkerrädsla i nationalparken Uda Walawe.