When Whales Could Walk Preview
Season 51
Episode 1
About the Episode
A spectacular fossil graveyard reveals a 43-million-year-old whale that had four legs and could walk. Follow scientists as they search for new clues to how mammals moved from land into the sea to become the largest animals on Earth.
Aired:
| Expires: | Runtime: 30s
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Extras
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How to watch the eclipse without burning your eyes
A total solar eclipse is coming. If you want to check it out, you need eye protection.1:59 -
When Camels Roamed the Arctic
The oldest DNA ever recovered revealed an ecosystem unlike anything that exists today.2:54 -
Rare stellar explosion will ignite a "new star"
Sometime between now and September a star will explode.1:17 -
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Great American Eclipse Preview
Explore the spectacular cosmic phenomenon of a total solar eclipse.0:30 -
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The force that makes up more than half of the universe
Dark Energy was first discovered in 1998, and scientists don’t fully understand it.1:40 -
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Why is the Eiffel Tower Shaped Like That?
The Eiffel Tower was a completely novel design at the time it was built.1:58
