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Source: Reuters -
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Thursday 18th August 2011, 9.30pm TV2
Don't miss 20/20 - the best of New Zealand and international Current Affairs with reporters, Emma Keeling, Hannah Ockelford, Erin Conroy and Sonya Wilson
This week on 20/20:
The Last Taboo: This week's 20/20 Special Edition takes a look at genetic sexual attraction, or GSA.
The show follows a group of everyday people who have found themselves in a passionate affair with a long lost sibling, or parent they thought they had lost through adoption.
With the rise in sperm donation, and children of adoption growing into adults, and seeking birth parents, this is a story that could become more common.
Most of the people 20/20 speaks with are in hiding, but others are starting to speak out about their relationships, and are fighting for the right to stay together.
The best of New Zealand and international current affairs - 20/20 - with reporters Emma Keeling, Hannah Ockelford, Erin Conroy and Sonya Wilson.
