Ice Bucket Challenge

In 2014, the ice bucket challenge craze took over the internet.

Millions of people including sports stars and celebrities filmed themselves being doused in ice cold water for charity.

Nancy Frates' son Pete helped to make the ice bucket challenge become a phenomenon. Nancy tells Gill Kearsley the poignant story of how the challenge went from a simple idea to world news.

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(Photo: Pete Frates takes part in the ice bucket challenge. Credit: Barry Chin/The Boston Globe via Getty Images)