Deaf, blind and mighty: how Helen Keller learned to speak – video

To mark 50 years since Helen Keller's death, we take a look back at her remarkable story. At only 19 months old, illness left Keller blind and deaf. Yet she went on to become a powerful advocate for disability rights, women's suffrage and racial equality in the US. Her legacy is one of resilience and unshakable courage while her charity, Helen Keller international, founded in 1915, remains active across the world