episodes
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1.
London Super Tunnel
Thousands of engineers, technicians and workers race to build Europe’s biggest construction project–London’s new railroad, the Elizabeth Line.
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2.
Star Chasers of Senegal
A NASA spacecraft named Lucy blasts off from Cape Canaveral on a mission to the Trojans, a group of asteroids over 400 million miles from Earth thought to hold important clues about the origins of our...
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3.
Ancient Builders of the Amazon
Recent discoveries in archaeology are exploding the myth of the Amazon as a primeval wilderness, revealing traces of ancient civilizations that flourished for centuries, with populations numbering in...
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4.
New Eye on the Universe
Join scientists as they use NASA’s brand new James Webb Space Telescope to peer deep in time to hunt for the first stars and galaxies in our universe, and try to detect the fingerprints of life in the...
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5.
Weathering the Future
It’s hard not to notice: our weather is changing. From longer, hotter heat waves, to more intense rainstorms, to megafires and multi-year droughts, the U.S. is experiencing the full range of impacts f...
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6.
Chasing Carbon Zero
The U.S. recently set an ambitious climate change goal: zero carbon emissions by 2050. And to achieve that, slash emissions in half by 2030. Is it possible? And what kind of technology would it take?...
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7.
Saving the Right Whale
North Atlantic right whales are among the planet’s most critically endangered large ocean mammals. With fewer than 350 remaining as of 2023, they could be extinct within 20 years. But teams of marine...
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8.
Hidden Volcano Abyss
In January 2022, one of the most powerful volcanic eruptions in recorded history rocked the Pacific islands of Tonga, sending shockwaves around the world. Through first-person accounts of the disaster...
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9.
Your Brain: Perception Deception (1)
Is what you see real? Join neuroscientist Heather Berlin on a quest to understand how your brain shapes your reality, and why you can’t always trust what you perceive. In the first hour of this two-pa...
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10.
Your Brain: Who's in Control? (2)
Are you in control, or is your brain controlling you? Dive into the latest research on the subconscious with neuroscientist Heather Berlin. Sleepwalking, anesthesia, game theory, and more reveal surpr...
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11.
Ancient Earth: Birth of the Sky
Today, Earth is enveloped by a thin veil of gas, a narrow band of atmosphere that protects a world covered in lush green vegetation, deep blue oceans, and abundant life. But 4.5 billion years ago, Ear...
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12.
Ancient Earth: Frozen
700 million years ago, Earth was a giant snowball cloaked in ice from pole to pole—a global deep freeze that held the planet in a stranglehold, threatening the survival of the earliest complex life. H...
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13.
Ancient Earth: Life Rising
For billions of years, life teemed in the oceans of planet Earth while the land was desolate and inhospitable. So how did life make the leap to land? Scientists explore how some of the earliest life e...
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14.
Ancient Earth: Inferno
252 million years ago, the most devastating mass extinction of all time abruptly wiped out around 90% of all species on Earth. The culprits were the biggest volcanic eruptions the world has ever seen,...
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15.
Ancient Earth: Humans
The story of Earth can only be told because now, 4.5 billion years into its existence, a technological and self-aware animal species roams its surface, able to study the very planet that gave rise to...
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16.
Inside China's Tech Boom
In the span of just a few decades, China has transformed into a science and technology superpower. But how did it get here and where is it headed? Take an insider’s tour of high-profile tech companies...
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17.
The Battle to Beat Malaria
Malaria is one of humanity’s oldest and most devastating plagues. In many parts of the world, it remains an ever-present scourge that sickens or kills millions of people each year. What if it could fi...
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18.
Lee and Liza's Family Tree
Many descendants of enslaved people have little record of their family's ancestry. Follow one family's quest to discover their lost history, and see how science and genealogy can help rebuild a family...