Extras
Dr. M. Sanjayan investigates the largest river restoration ever attempted in the United States.
The sisters welcome a new postulant, Sister Catherine, to Nonnatus House.
Rosalind delivers a baby with a suspicious spinal lesion. A sudden gas explosion shocks all.
The relationship between Rudolf Nureyev and legendary ballerina Margot Fonteyn.
Rudolf Nureyev performs a solo in Swan Lake.
Explore key military technologies in the American colonies’ fight for freedom.
Trixie cares for a single mother recently discharged from a psychiatric hospital.
Meet the hippo, crocodile and lion families navigating the dry season in Katavi National Park.
Take an intimate look into the life and career of screen and stage icon Liza Minnelli.
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North Carolina’s Outer Banks may be one of the most dangerous coastlines in the world.
Florida's once endangered crocodiles are making a very unlikely comeback!
Scientists find the exact time of a massive quake using trees, soil and human records.
Can new scientific research help unravel the mystery of Cahokia's disappearance?
What happened to the once lush, now desert-like Colorado River Delta?
How is this groundbreaking experiment in Ecuador helping deforested rainforests recover?
Sea otters play a vital role in maintaining the balance of sensitive kelp forests.
Exploring LIDAR: Tech using lasers to reveal the deep history beneath our world’s surface.
Joe visits the world’s largest crane, an engineering feat helping to fight climate change.
These secret islands of the Everglades might be the key to saving it.