Name: When Whales Could Walk (Español)
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Un espectacular cementerio de fósiles revela una ballena de 43 millones de años que tenía cuatro patas y podía caminar. Sigue a los científicos en su búsqueda de nuevas pistas sobre cómo los mamíferos se trasladaron de la tierra al mar para convertirse en los animales más grandes de la Tierra.

Fósiles gigantes en el Sahara revelan nuevos secretos sobre la evolución de las ballenas.

When Whales Could Walk (Español)

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A skeleton of a whale in a desert-like area.

Un espectacular cementerio de fósiles revela una ballena de 43 millones de años que tenía cuatro patas y podía caminar. Sigue a los científicos en su búsqueda de nuevas pistas sobre cómo los mamíferos se trasladaron de la tierra al mar para convertirse en los animales más grandes de la Tierra.

Fósiles gigantes en el Sahara revelan nuevos secretos sobre la evolución de las ballenas.

Evolution

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Northern Mariana Islands

Puerto Rico

American Samoa

Guam

U.S. Virgin Islands

U.S. Minor Outlying Islands

US & Territories

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. What are the implications of these dramatic developments in the Arctic? Scientists and local communities alike are struggling to grasp the scale of the methane threat and what it means for our climate future. (Premiered February 2, 2022)

In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate.

Arctic Sinkholes

The top half of Jupiter in blue and green against a night sky

A composite image of Jupiter using images captured by the James Webb Space Telescope. Image Credit: NASA, ESA, CSA, Jupiter ERS Team; image processing by Judy Schmidt.

Explore the cosmos, delve into ancient history, and follow an extreme rescue with NOVA’s most-watched documentaries released in 2022.

NOVA’s most popular science documentaries of 2022

Four bright orange loops brand off of a dark blue blob

A transmission electron micrograph of HIV-1 virus particles (orange) replicating from the plasma membrane of an infected H9 T cell. Credit: NIAID, Flickr

Scientists have cured a handful of people of HIV by piggybacking on treatments they received for blood cancer. But does that bring a widespread cure any closer?

When Whales Could Walk (Español)

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When Whales Could Walk

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When Whales Could Walk