David Attenborough continues his search for the origins of flying animals, as he charts the rise of new, larger creatures – extinct reptiles that flew on wings of skin, dinosaurs that sprouted feathers to become the ancestors of birds, and gliding mammals that emerged from a life in the trees to dominate the night as bats. His journey spans the globe – from the rainforests of Borneo to see bizarre gliding animals, to China and its new discoveries of dinosaur fossils. Stunning CGI brings to life creatures that disappeared over 200 million years ago, and new filming techniques bring us closer than ever to the secrets of flight itself.
Category:Science Duration:50:54 Series: Conquest of the Skies
The documentary focuses on the captivity of Tilikum, an orca involved in the deaths of three individuals, and the consequences of keeping orcas in captivity. It includes his capture in 1983 off the coast of Iceland, and purported harassment by fellow captive orcas at Sealand of the Pacific, incidents that Cowperthwaite argues contributed to the orca's aggression. Many of us have experienced the excitement and awe of watching 8,000-pound orcas, or "killer whales," soar out of the water and fly through the air at sea parks, as if in perfect harmony with their trainers. Yet, in our contemporary lore this mighty black-and-white mammal is like a two-faced Janus-beloved as a majestic, friendly giant yet infamous for its capacity to kill viciously. BLACKFISH unravels the complexities of this dichotomy, employing the story of notorious performing whale Tilikum, who-unlike any orca in the wild-has taken the lives of several people while in captivity. So what exactly went wrong? Shocking, never-before-seen footage and riveting interviews with trainers and experts manifest the orca's extraordinary nature, the species' cruel treatment in captivity over the last four decades, and the growing disillusionment of workers who were misled and endangered by the highly profitable sea-park industry. This emotionally wrenching, tautly structured story challenges us to consider our relationship to nature and reveals how little we humans have learned from these highly intelligent and enormously sentient fellow mammals.
What triggered the incredible diversity of life on Earth, and how have complex life forms, including humans, evolved? Is there direction to evolution? And is human intelligence inevitable? This program focuses on evolution's 'great transformations' —among them the development of a standard four-limbed body plan, the journey from water to land, the return of marine mammals to the sea, and the emergence of humans. Driven by a combination of opportunism and a genetic 'toolkit', these astounding leaps forward define the arc of evolution. And they suggest that every living creature on earth today, and every species that has ever existed, is a variation on a grand genetic theme—a member of one, and only one, tree of life
Category:Science Duration:02:00:00 Series: Evolution
A Winning Design clarifies what makes a mammal different from reptiles and birds. No, it isn't egg-laying: both the platypus and the echidna are egg-laying mammals; it's their ability to adapt. And it's this adaptability that becomes the crux of the remainder of the series. From the tiniest bat to the massive blue whale, all mammals share the ability to nurture their young on milk and regulate their own temperatures.
Category:Nature Duration:49:00 Series: The Life of Mammals
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