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

Sea Change: Survival in the Gulf of Maine Preview

Meet the people leading new efforts to shape the future of the Gulf of Maine and our oceans.

0:30
Sea Change: Peril in the Gulf of Maine Preview

Explore Cashes Ledge - part of the Gulf of Maine that helps power the Gulf’s more than 3,000 species

0:30
Sea Change: Bounty in the Gulf of Maine Preview

Discover the lasting impact of how international trade forever changed the Gulf of Maine’s bounty.

0:30
Sea Change: Survival in the Gulf of Maine

Meet the people leading new efforts to shape the future of the Gulf of Maine and our oceans.

53:30
Sea Change: Peril in the Gulf of Maine

Explore Cashes Ledge - part of the Gulf of Maine that helps power the Gulf’s more than 3,000 species

53:30
Sea Change: Bounty in the Gulf of Maine

Discover the lasting impact of how international trade forever changed the Gulf of Maine’s bounty.

53:30
How A.I. is fighting wildfires

Firefighters are using AI to find wildfires before they explode.

1:34
These cheeses are at risk of going extinct

The culprit is a lack of microbial biodiversity in the mold used to make iconic French cheeses.

1:11
First ape ever seen using medicinal plant to treat wound

After this orangutan sustained a gnarly facial wound, he did something kind of human-like.

1:58
Total Eclipse in the Heart of Texas Hill Country

People from all over the country converge on a small Texas town to see a total solar eclipse.

6:41