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Nova

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//player.pbs.org/partnerplayer/bto5LoPoftVwLDcd9Ht0dw==/?topbar=false&end=0&endscreen=true&start=0&autoplay=false Four and a half billion years ago, the young Earth was a hellish place—a seething chaos of meteorite impacts, volcanoes belching noxious gases, and lightning flashing through a thin, torrid atmosphere. Then, in a process that has puzzled scientists for decades, life emerged. But how? NOVA joins... /episodes/get/37604 /episode/37604 Life's Rocky Start /episode-player/37604
Life's Rocky Start

What is the secret link between rocks and minerals, and every living thing on Earth?

Air date:
Thu, 05/10/2018 - 07:31
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//player.pbs.org/partnerplayer/H7q0rXRDFnfW4yA7OYTyjg==/?topbar=false&end=0&endscreen=true&start=0&autoplay=false Disastrous hurricanes. Widespread droughts and wildfires. Withering heat. Extreme rainfall. It is hard not to conclude that something’s up with the weather, and many scientists agree. It’s the result of the weather machine itself—our climate—changing, becoming hotter and more erratic. In this 2-... /episodes/get/61838 /episode/61838 Decoding the Weather Machine /episode-player/61838
Decoding the Weather Machine

Discover how Earth’s intricate climate system is changing.

Air date:
Wed, 04/18/2018 - 04:40
| STEREO |
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//player.pbs.org/partnerplayer/VUvusJ5Bx_qQg_A32JPBGg==/?topbar=false&end=0&endscreen=true&start=0&autoplay=false Predictions underlie nearly every aspect of our lives, from sports, politics, and medical decisions to the morning commute. With the explosion of digital technology, the internet, and “big data,” the science of forecasting is flourishing. But why do some predictions succeed spectacularly while... /episodes/get/59846 /episode/59846 Prediction by the Numbers /episode-player/59846
Prediction by the Numbers

Discover how predictions underpin nearly every aspect of our lives and why some succeed spectacularly while others fail. Explore entertaining real-world challenges and join experts as they tackle that age-old question: Can we forecast the future?

Air date:
Wed, 02/28/2018 - 03:40
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//player.pbs.org/partnerplayer/gh0DaHVBASRN6fcmfWFq7g==/?topbar=false&end=0&endscreen=true&start=0&autoplay=false From derailments to head-on collisions to drivers killed at road crossings, deadly train accidents claim dozens of lives each year. But just how unsafe are the railroads? NOVA investigates recent rail tragedies and advances in train tech that could help prevent them, taking a special look at Japan’... /episodes/get/50933 /episode/50933 Why Trains Crash /episode-player/50933
Why Trains Crash

Can new crash prevention technology help us avoid deadly train accidents?

Air date:
Sun, 02/04/2018 - 06:40
| HD | STEREO |
Expired
Chasing Pluto

Watch as the New Horizons spacecraft captures our first clear view of Pluto’s icy surface.

Air date:
Thu, 02/01/2018 - 07:00
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//player.pbs.org/partnerplayer/gV0oUYDf3Pn4kEkxKfiR6w==/?topbar=false&end=0&endscreen=true&start=0&autoplay=false Diseases that were largely eradicated in the United States a generation ago—whooping cough, measles, mumps—are returning, in part because nervous parents are skipping their children's shots. NOVA takes viewers around the world to track epidemics, explore the science behind vaccinations, hear... /episodes/get/22651 /episode/22651 Vaccines—Calling the Shots /episode-player/22651
Vaccines—Calling the Shots

Examine the science behind vaccinations and the risks of opting out.

Air date:
Fri, 01/26/2018 - 00:06
| HD | STEREO |
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