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.
Antarctica was once in the centre of supercontinent Gondwana. Traces of these connections remain in its plants and marine life.
Every animal in Antarctica answers the call of the seasons. The continent itself is vastly different in summer and winter.
Even in the coldest, driest and most inhospitable place on Earth, life finds a way to survive - and thrive.
There are 25,000 islands in the vast Pacific Ocean. Each one fosters its own ecology with unique rules and behaviours.
With added facts. A bottlenose dolphin has a raspy voice and needs to see the doctor to get the all-clear.
Southern white rhino Victoria is pregnant with a calf that could be key in saving a species from extinction. Connor the Malayan tiger has tooth trouble. A new bird keeper learns to feed the shoebill.
A sea lion has tummy trouble and the team feeds him a snack to help them investigate why. Big Mama the guitarfish may be living up to her name.
The world's largest living structure, the Great Barrier Reef, is home to curious residents and seasonal visitors.
With added facts. The team welcome two rescued southern sea otter pups, Mara and Gibson, from the California coast. Young ruddy ducks arrive at the aquarium and are introduced to their new habitat.
With added facts. A staff member heads to the Marine Mammal Center in California to help in rehabilitation efforts of elephant seals. African penguins Charlie and Lizzie have been together for 25 years.
Mkhaya, the youngest baby elephant in the Safari Park, learns to use her trunk. Will Alba the Andean bear become a first-time mum? Vets examine Mandazzi the gorilla. Jeff looks for a coastal patch nose snake.
Sharks are more than just hunters. Only now are discoveries revealing a hidden side to their character. They have an intricate social life, complex courtship rituals, surprising ways of bringing up their young, and extraordinary powers of navigation. They can forge relationships with the strangest of partners, even us! This is the secret life, of the shark.
Safari Park keepers say goodbye to two elephant brothers. Can the zoo vets design a custom shoe for Felix, an excitable three-toed Baird's Tapir? Two African penguin chicks grow up and join the colony.
A rescued sea otter must build his independence after becoming too attached to his best friend; over 50 African penguins are moved for spring cleaning.
Trainers prepare rescued sea lions for eye surgery; the team travels to the Bahamas to collect blood samples from native sharks; staff devise new enrichment for giant octopus Ophelia.
A southern sea otter is rushed to the health centre; the team help coral restoration efforts; young African penguins prepare for an upcoming event.
The zoo says goodbye to beloved pandas Bai-Yun and Xiao Liwu, as mother and cub prepare to return to China; Tembo the retired "Hollywood" elephant tries traditional Chinese medicine for her arthritis.
Anatomist Dr Alice Roberts follows a dinosaur exhibit from raw bones to colossal models.
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