How do trees grow? Can trees get sick? If a tree falls in the woods ...? Kellyn & Co come up with answers to questions about trees.
With every disaster that could befall humanity in mind, Stephen Hawking explains why we need to colonise another planet — and how.
Continuing his quest, Mick Fanning travels to the world's shark hotspots where he gets even closer to the amazing apex predators and gains an insight into his own close encounter with one.
World champion surfer Mick Fanning embarks on a quest to better understand the importance of the animal responsible for one of the most defining moments of his life - the shark - by being face-to-face with them once more.
David Attenborough reveals the life of the hippopotamus as never seen before.
Australia has had a 160 year long battle to control the spread of hordes of hungry, rapidly multiplying rabbits, to prevent the damage they cause to farms.
Feral goats are an introduced pest to Australia, but worth as much as lamb meat. They are also money-making saviours to many outback stations in tough times.
To survive in the forest, cute tiger cubs must transform into invisible killers in three critical steps.
A mountain gorilla learns the coordination to roam free in a tiny fragment of forest.
As cities are built, animals are pushed out of their natural homes. These 'wild outcasts' find themselves fighting for their place in a land that once belonged to them.
To survive in the savannah, young painted wolves must become powerful pack members.
Thanks to NASA's ground-breaking Kepler mission, astronomers believe there are over 20 billion alien worlds with liquid water and therefore the potential for life.
For these lion cubs to survive, they need a fearless mother with a four-point survival plan.
Emperor penguins battle the worst winter on Earth. Can the chicks survive to adulthood?
A group of chimps in Senegal is led by an alpha male named Dave.
At three months old, the struggle for the animal babies to find food begins to hit home.
This episode explores whether the secret to an animal's success in this fast-changing world is to keep one foot in the wild and one in the city, becoming a wild commuter.
While most of us imagine our world's cities to be concrete jungles devoid of nature, for animals of all shapes and sizes they are just a new habitat filled with new and surprising opportunity.
Mating games in the bird world, where infidelity and promiscuity is more normal than staying faithful. Presented by David Attenborough.
Where there is food, there will be some species of bird that has solved the problem of collecting it. Presented by David Attenborough.
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