Episode 1
Aired Feb 5, 2020
Polar Extremes
Paleontologist Kirk Johnson explores the polar extremes of the planet, including miles-high ice sheets and warm polar forests brimming with life.
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Episode 2
Aired Feb 12, 2020
Dog Tales
A look at dog domestication, how scientists test wolf intelligence and decode canine DNA, and what science says about a dog's love for humans.
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Episode 3
Aired Feb 19, 2020
Cat Tales
The perplexing behaviors of cats have often raised the question of whether humans ever really domesticated felines.
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Episode 4
Aired Feb 26, 2020
Mysteries of Sleep
Scientists study why animals and humans need to sleep, what happens to the brain during sleep, and the role sleep plays in memory, trauma, and emotion regulation.
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Episode 5
Aired Apr 1, 2020
Cuba's Cancer Hope
Cuban scientists develop their own biotech industry, including lung cancer vaccines that may give new hope to patients around the world.
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Episode 6
Aired Apr 8, 2020
The Truth About Fat
The mysteries of fat and its role in hormone production, hunger and pregnancy.
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Episode 7
Aired May 13, 2020
Decoding COVID-19
Doctors strategize to stop the spread of COVID-19; researchers work toward finding treatments and vaccines; how the disease emerged, what it does to the human body, and how it became a pandemic.
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Episode 8
Aired May 20, 2020
Eagle Power
Up-close footage provides a look at the strength, eyesight and flying skills of an eagle, and reveals the danger and drama of chicks as they struggle to survive.
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Episode 9
Aired Sep 9, 2020
Human Nature
Scientists study the implications of CRISPR, how it may change the human race's relationship with nature and what it means for human evolution.
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Episode 10
Aired Sep 16, 2020
Secret Mind of Slime
New research on extremely primitive life forms called slime molds, which navigate through life without a brain, could reveal the fundamental rules underlying all decision making.
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Episode 11
Aired Sep 23, 2020
A to Z: The First Alphabet
Researchers uncover the evolution of writing and the story of the alphabet, dating back to millennia-old carvings in an Egyptian turquoise mine.
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Episode 12
Aired Sep 30, 2020
A to Z: How Writing Changed the World
How the development of writing played a vital role in shaping world history, from the invention of paper to the printed book.
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Episode 13
Aired Oct 14, 2020
Nature's Fear Factor
Scientists reintroduce wild dogs to Mozambique's Gorongosa National Park to see if it helps restore balance to the entire ecosystem.
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Episode 14
Aired Oct 21, 2020
Touching the Asteroid
Spacecraft OSIRIS-REx attempts to grab a piece of an asteroid to bring back to Earth so scientists can study it to learn about the planet's origins.
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Episode 15
Aired Oct 28, 2020
Can We Cool the Planet?
As global temperatures rise, scientists look to geoengineering solutions, from planting trees to sucking carbon out of the air, as a means to cool the planet.
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Episode 16
Aired Nov 25, 2020
Saving Notre Dame
Engineers race to rebuild the roof of the Notre Dame cathedral and secure the medieval structure within five years.
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