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Humpback Health

Season 14 | 4m 04s

How does the body size and overall health of humpback whales change across their migratory cycle? A team of researchers studying the animals, which spend part of the year feeding in Alaska and a few months fasting while in their Hawaiian breeding grounds, is making remarkable discoveries.

Major funding for this program was provided by The Batchelor Foundation, encouraging people to preserve and protect America’s underwater resources. Additional funding was provided by The Parrot Family Endowment for Environmental Education. Distributed by .
Extras
Step behind the scenes of Ken Burns’s new film to see how The American Revolution came to life.
Historian Stephen Conway. The American Revolution premieres November 16.
Historian Christopher Brown. The American Revolution premieres November 16.
Historian Jane Kamensky. The American Revolution premieres November 16.
Historian Stephen Conway on the psychological impact of Saratoga on the British.
The filmmakers on how understanding the people of the Revolution can help us understand who we are.
Filmmakers discuss how they used stories of both well-known and lesser known figures.
The filmmakers discuss how the story of The American Revolution came together.
The filmmakers discuss how they crafted imagery to help tell the story of the American Revolution.
Ken Burns, Sarah Botstein, and David Schmidt on the challenges of telling America's origin story.
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