Sangduen 'Lek' Chailert comes from the small hill tribe village of Baan Lao in northern Thailand. At a young age she heard the screams of an elephant that was being forced to work in terrible conditions for the logging industry. Lek felt compelled to help it. Although she had no training she bought some medicine and soon she was being called upon to treat other local elephants. She later formed the Save Elephant Foundation to advocate for the rights of these animals in Thailand and the Elephant Nature Park, a protected area where rescued elephants receive protection and form new herds. Lek says that rebuilding an elephant's trust in humans can be a challenge - 'they never forget' - but she's found a novel technique: singing them lullabies.

Saba Douglas-Hamilton was born in Kenya where her father worked as a prominent elephant conservationist. In fact she says she was 'baptised in elephant's breath' as her mother introduced her to wild elephants when she was a baby. Today she works for the charity her family started, Save the Elephants, which researches their behaviour and works with local people to promote human-elephant co-existence. She once feared for her life when she woke in the night to find a wild bull elephant towering over her mattress. Unperturbed by this, she says 'I find elephants endlessly fascinating…We recognise in them, and they recognise in us, a parallel intelligence'.

(L) Saba Douglas-Hamilton. Credit: Sam Gracey