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Dinosaur Apocalypse: The Last Day

S49 E7 / 53m 33s / TV-PG
The search continues for signs of what might have happened on the day the dinosaurs died. Scientists uncover remarkable evidence, including a near perfectly preserved dinosaur leg and what could be pieces of the asteroid itself.
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Dinosaur Apocalypse: The New Evidence

S49 E6 / 53m 33s / TV-PG
In North Dakota, scientists use new fossils to reconstruct what life might have been like just before an asteroid wiped out the dinosaurs. The site reveals remarkable evidence, including the unhatched egg of a pterosaur, a huge flying reptile.
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Determined: Fighting Alzheimer's

S49 E5 / 53m 28s / TV-PG
Follow three women at risk of developing Alzheimer’s as they join a groundbreaking study to try to prevent the disease – sharing their ups and downs, anxiously watching for symptoms, and hoping they can make a difference.
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Augmented

S49 E4 / 1h 25m
Follow the dramatic personal journey of Hugh Herr, a biophysicist working to create brain-controlled robotic limbs. At age 17, Herr’s legs were amputated after a climbing accident. Frustrated by the crude prosthetic limbs he was given, Herr set out to remedy their design, leading him to a career as an inventor of innovative prosthetic devices.
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Great Mammoth Mystery

S49 E3 / 53m 26s / TV-PG
Sir David Attenborough investigates a unique site in southern England where amateur fossil hunters uncovered giant mammoth bones and evidence of Neanderthals. A team of paleontologists and archaeologists soon discover that the site preserves rare evidence of the extinct beasts and early human inhabitants of Britain dating to over 200,000 years ago.
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Secrets in the Scat

S49 E2 / 53m 32s / TV-PG
Scott Burnett is “Scatman”—an Australian ecologist on the trail of the secrets of poop. By identifying and analyzing animal scat for DNA and hormones, he discovers essential details of their behavior, how they fit in the ecosystem, and even how to protect them.
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Arctic Sinkholes

S49 E1 / 53m 28s / TV-PG
Colossal explosions shake a remote corner of the Siberian tundra, leaving behind massive craters. In Alaska, a huge lake erupts with bubbles of inflammable gas. Scientists are discovering that these mystifying phenomena add up to a ticking time bomb, as long-frozen permafrost melts and releases vast amounts of methane, a potent greenhouse gas.
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