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Why Do We Itch (ASL)

Season 6 Episode 37 | 4m 59s

It’s one of the most annoying sensations our bodies can feel, but does anything feel better than when you scratch an itch? Ok, maybe *some* things. But itching and scratching are up there. How does this weird sensation work? And what is itching for?

Aired: 05/17/18
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.
At 23, Nureyev fled Russia to seek asylum in Paris.
Rudolf Nureyev performs a solo in Swan Lake.
The relationship between Rudolf Nureyev and legendary ballerina Margot Fonteyn.
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.
Liza Minnelli became a godmother to several of her friends’ children, making her own chosen family.
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