Orcas can solve the mystery of menopause?

Scientists at the University of Exeter and York, which examines the evolution of menopause and found evidence of its origin in the Orcas.

Humans and orcas beings are two of only three species that have evolved to stop to halfway through their lives with children - something that in the long term is not even the great apes and elephants. While some have suggested that menopause is a side effect of our longer life span, the researchers say that whales the key to what could be a long time been a mystery of evolution.

Science reporter Victoria Gill BBC joined the scientists in an unusual observation tour whales on the coast north Pacific.

Filmed and edited by David Cheeseman and Victoria Gill

Hear more on this story and the BBC - meeting with the southern resident orca menopause, BBC Radio 4, Wednesday at 2100 BST

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